Influence of Media in Student’s Life

Different kinds of Medias are there which influence the common people. News paper, T. V, Radio etc are the prominent Medias at present. Mass Medias have the power to educate people through advertisement, visuals, clippings and film slides. The propagation of ideas become very easy since it directly induces comprehensive knowledge in common man. The news paper is useful only to literate people where as T. V and radio covers all the human flock irrespective of literate or illiterate. Among all the Medias T. V is the most important device. People can understand facts from T.V simultaneously by hearing and by viewing the programme. T. V exerts a feeling that the things are happening in front of them. The media serves as a link between the government and the people. The government policies and activities are conveyed to the people . The views of people are forcefully expressed to make the authorities aware of the public feelings. The media can perform its true role as a guardian of public interest and a true source of all kind of information in a true democracy. The media in the advanced society should perform a noble mission of enlightening people.It can broaden the vision of people and discourage sectarian, communal and divisive trends. Media should not resort to sensationalism and distortion of truth. The influence of media is very great since it can make or break the government . It should be a real mirror of the society The responsibilities of media are the stronghold of the democratic setup. Democracy is based on the mass participation of the people in the affairs of the government . Article19-22 of constitution of India states right to freedom . Today the media is the forum of expression.A free press and media are therefore essential instruments of openness in society. Here we should remember a vital saying Your freedom ends where anyone else’s begins†. Freedom of expression should not be allowed to degenerate into freedom of abuse. In wider sens e the freedom given to media should not be allowed to degenerate into abuse. Even though there are lot of plus points so many negative points are also associated with the Medias. It has the bad effect of inducing baseless ideas through advertisements. The advertisements are mainly used for the enhancement of business purposes.Moreover most of the advertisements contains obsenity. Our cultural heritage is usually get hampered in such programmes. Since the media educates the people, and it does not extend any corrective measures people have to decide by themselves whether the idea propagated by the medias are correct or not. Since repetition of programmes are possible and its frequent reiteration, instill the people, the fundamental concepts which it intends to propagate through the particular programme. Thus the people believe that what the media propagates is fully correct.Now the young generation has a tendency to imitate certain scenes from cinemas and from some advertisements. Th ey don’t know such scenes are exaggerated or even created with the help of technological advancement. Thinking that it can be done in real life also, the people try to imitate it and landed up in danger. Hence the media has the power of educating people, the good and the bad. Since it affect the eyes, the ears and the mind simultaneously nothing can overcome the influence of the media. The present life of the people is controlled by the Medias alone. From this we know, how deep the influence of media in human life is.

Questions and Issues of Affirmative Action

Question at Issue Affirmative action was implemented with the idea and hope that America would finally become truly equal. The tension of the 1960's civil rights movement had made it very clear, that the nation's minority and female population were not receiving equal social and economic opportunity. The implementation of affirmative action was America's first honest attempt at solving a problem, it had previously chose to ignore. However, there are many people that don't see affirmative action as a positive solution to this major societal problem of racial inequality. These people feel that Affirmative action uses reverse discrimination to solve the problem of discrimination in the workplace. The Enthymeme Affirmative action uses reverse discrimination to solve the problem of discrimination because Affirmative action makes employers have to choose from the best available employee from the minorities, instead of having the possibility to choose simply the best employee. A= Affirmative action v1= uses B= reverse discrimination to solve the problem of discrimination Because A= Affirmative action v2= makes C= employers have to choose from the best available employee from the minorities, instead of having the possibility to choose the best available employee. Assumption: Anything that makes employers have to choose from the best available employee from the minorities, instead of having to simply choosing the best available employee uses reverse discrimination to solve the problem of discrimination. Assumption and Audience The assumption for this paper will appeal to employees who do not qualify for Affirmative action, as well as employers and minorities. Employees not qualifying for Affirmative action feel shortchanged due to the fact employers, for a lesser skilled employee, bypassed them. They feel tricked by the government or the minority therefore firing up racism among the bypassed group, while Affirmative action was introduced to decrease racism. Employers also feel as if they have ended up with a lesser skilled employee therefore increasing the amount of lesser quality work. Employees provided with equal opportunity jobs bear the mark of â€Å"not being the best pick, but only the best pick from a limited group. † Organization Question at Issue: Does Affirmative action use reverse discrimination to solve discrimination? Definition of A: Affirmative action is an active effort to improve the employment or educational opportunities for members minority groups and women. A -* C Relationship: Affirmative action causes federal contractors/employers to choose from the best available employee from the minorities instead of choosing the best available employee from the whole Definition of B: Reverse discrimination to solve the problem of discrimination is using discerning treatment against a white male or female instead of a black male or female to solve a problem of racial inequality. A -* B Relationship: Affirmative action uses reverse discrimination to solve the problem of discrimination. Definition of C: Employers ability to choose the best available employee from the whole instead of a select minority is the outcome of affirmative action. It insures that minorities are recruited to have real opportunities to be hired in the workplace. C -* B Relationship: By employers having to choose from the best of a minority group for employment rather than just simply the best employee, reverse discrimination is used to solve the problem of discrimination. This is due to the fact that unequal opportunity is given to the minority. This argument would be represented in an editorial form due to its appeal to the common everyday man trying to make an honest living. Affirmative Action Animosity Affirmative action is the U. S. program set forth in the early 1970's to correct the effects of past discrimination by giving preferential treatment to women and ethnic minorities in the workplace. At the time of affirmative action's induction to society, proponents of affirmative action programs felt that the only way to increase the number of minorities in the workplace was to establish a system of quotas to be maintained by law. However, by forming and maintaining these laws over the past twenty-five years, a development of an entirely new set of problems arose; problems that would fuel controversy over affirmative action. A majority of people are dissatisfied with current affirmative action policies, but are opposed to eliminating them completely: â€Å"Americans hold doggedly to notions of family and liberty, but they also believe in a sort of rough equality of opportunity that gives the underdog a real chance in life† (Kahlenberg 209). Once necessary, affirmative action programs have outlived their usefulness, and promote discrimination by continuing to allow for unfair hiring practices. Affirmative action uses reverse discrimination to solve the problem of discrimination because it makes employers have to choose from the best available employee from the minorities, instead of having the possibility of simply choosing the best available employee. The primary goal of affirmative action programs was to increase the number of minorities, including women, in the workplace. The American Association for Affirmative Action states that they are â€Å"dedicated to the advancement of affirmative action, equal opportunity and the elimination of discrimination on the basis of race, gender, ethnic background or any other criterion that deprives people of opportunities to live and work,† (AAAA Sept. 1998). Most people would agree that goal has been realized. There was a definite need for action to enlighten individuals and corporations to the negative results of their prejudices. It is unlikely that corporations would have taken the initiative to hire from the minority groups had it not been for government intervention. Affirmative action has created numerous opportunities for women and minorities in this country. It would be difficult to argue that these programs were not absolutely essential in making progress toward the semi-equality that we have today. However, affirmative action has always been a compromise, and with the progress made, a price has also been paid. Affirmative action must now be rethought and restructured. Laws created preference programs that â€Å"were based in the conscience of the American people and in their commitment to equal treatment,†(Roberts & Statton 67). The racial quotas that we experience today are blatant perversions that are illegal under the statutory language of the Civil Rights Act† (Roberts & Stratton 67). If the goal is true equal opportunity employment, removal of all advantages and allowing people to be hired for their skills and abilities only should occur. Continuing to allow for unfair hiring practices, affirmative action programs promote discrimination. Using reverse discrimination, defined as the discerning treatment against white males instead of black males or women of any race, to solve the problem of discrimination will always receive criticism for its hypocrisy. For example, in 1965, the Newport News Shipbuilding Co. buckled under the heavy hand of the EEOC, who had solicited complaints by knocking on the doors in black neighborhoods. The company reluctantly agreed to promote 2,890 of its five thousand black workers, designating 100 blacks as supervisors, and agreed to a quota system. One shipyard worker stated that the EEOC had done its best to â€Å"set black against white, labor against management, and disconcert everybody. † (Roberts & Stratton 93). Another example of this reverse discrimination was in the education system; the public case of Cheryl J. Hopwood, Douglas W. Carvell, Kenneth R. Elliott, and David A. Rogers. They filed discrimination charges again the State of Texas stating they were discriminated against and denied admission to the University of Texas School of Law. The college granted admission to less qualified African American and Mexican American applicants through the use of a quota system. This practice of preferential admissions for minorities furthers the practice of reverse discrimination, now not just in the workplace, but also in the school systems. This creates animosities between workers that lead to further segregation, defeating the intentions of the programs entirely. Through the demise of race-dividing policies, underrepresented individuals shielded by affirmative action would be forced to compete, on a level playing field, for jobs and admission to colleges and universities. Competition has nothing but positive effects and is crucial in accelerating capitalism. The debilitating effects of affirmative action and quotas hinder an individual's desire to compete in society. Destroying discrimination caused by past offenses may never have perfect solutions, therefore, creating valid arguments for maintaining the existence of equal opportunity programs. But, to continue to offer one group opportunity, due only to their minority status, at the expense of another is wrong. Non-minorities continue to feel that their rights have been violated and that they are being punished for crimes that they had no part in committing. And when non-minorities are subject to the same discrimination, they have little recourse: â€Å"Under the 1991 Civil Rights Act, white males can have no grounds for discrimination lawsuits until they are statistically underrepresented in management and line positions. The 1991 Act, in effect, repealed the 1964 act by legalizing racial preferences as the core of civil rights law† (Roberts & Stratton). Regardless of good intentions, changing the past effects of discrimination is a goal that is far from reach, however, not unattainable. Women and minorities should be entitled to enjoy the same successes as the rest of the country, without the fear of being seen as the beneficiary of entitlements. Business owners should be free to make intelligent hiring decisions based on a persons skills and talents, without the fear of penalty from the government. As Marsha M. tates, â€Å"Affirmative action is used not to level the playing field, but used to strong-arm employer's into jobs, raises and promotions for Black Americans and women. † The growing tensions that result from these programs continues to divide races, not bring them closer together. â€Å"Ultimately, either quotas will go or democracy will, because legal privileges based on status are incompatible with democracy's requirement of equal standing before the law† (Roberts & Stratton 177). Allowing different sets of rules and lower standards to separate people based on race or sex, defeats any efforts made toward finally ending discrimination. Today every American has access to employment and educational opportunities. Americans live in a world of free enterprise where they can create their own successes. Americans have the means to achieve and succeed, they just have to have the drive and incentive to go out into the world and do it. As in every aspect of life some things may not come easily. Yet these experiences make one stronger and sometimes even more determined to achieve their goals. Individuals of any race should not use or misuse the color of their skin or sexual orientation for advancing themselves over others.    These problems are what fuel the controversy over affirmative action. Most people are dissatisfied with current affirmative action policies, but are opposed to eliminating them completely: â€Å"Americans hold doggedly to notions of family and liberty, but they also believe in a sort of rough equality of opportunity that gives the underdog a real chance in life† (Kahlenberg 209). Once a necessary evil, affirmative action programs have outlived their usefulness, and promote discrimination by continuing to allow for unfair hiring practices. The primary goal of affirmative action programs was to increase the number of minorities in the workplace. Most people would agree that that goal has been realized. There was a definite need for action to enlighten individuals and corporations to the negative results of their prejudices. It is unlikely that corporations would have taken the initiative to hire from the minority groups, had it not been for government intervention. Affirmative action has created numerous opportunities for women and minorities in this country. It would be difficult to argue that these programs were not absolutely essential in making progress toward equality that we have made today. The American Association for Affirmative Action states that they are â€Å"dedicated to the advancement of affirmative action, equal opportunity and the elimination of discrimination on the basis of race, gender, ethnic background or any other criterion that deprives people of opportunities to live and work (AAAA Sept. 1998). † However, affirmative action has always been a compromise, and with the progress made, a price has also been paid. Affirmative action must now be rethought and restructured. Laws created the preference programs: â€Å"were based in the conscience of the American people and in their commitment to equal treatment. The racial quotas that we experience today are blatant perversions that are illegal under the statutory language of the Civil Rights Act† (Roberts & Stratton 67). If the goal is true equal opportunity employment, removal of all advantages and allowing people to be hired for their skills and abilities only should occur. By continuing to allow for unfair hiring practices, affirmative action programs promote discrimination. Using reverse discrimination to solve the problem of discrimination will always receive criticism for its hypocrisy. By requiring corporations to fulfill quotas, the affirmative action laws promote the hiring of less qualified workers. For example, in 1965, the Newport News Shipbuilding Co. buckled under the heavy hand of the EEOC, who had solicited complaints by knocking on the doors in black neighborhoods. The company reluctantly agreed to promote 2,890 of its five thousand black workers, designating 100 blacks as supervisors, and agreed to a quota system. One shipyard worker stated that the EEOC had done its best to â€Å"set black against white, labor against management, and disconcert everybody. † (Roberts & Stratton 93). This creates animosities between workers that lead to further segregation, defeating the intentions of the programs entirely. Another example of this â€Å"reverse discrimination† was in the education system; the public case of Cheryl J. Hopwood, Douglas W. Carvell, Kenneth R. Elliott, and David A. Rogers. They filed discrimination charges again the State of Texas stating they were discriminated against and denied admission to the University of Texas School of Law. The college granted admission to less qualified African American and Mexican American applicants through the use of a quota system. This practice of preferential admissions for minorities furthers the practice of reverse discrimination, now not just in the workplace, but also in the school systems. Affirmative action has never been a perfect solution and people will always have valid arguments for maintaining its existence. But, to continue to offer one group opportunity, due only to their minority status, at the expense of another is wrong. Non-minorities continue to feel that their rights have been violated and that they are being punished for crimes that they had no part in committing. And when non-minorities are subject to the same discrimination, they have little recourse: â€Å"Under the 1991 Civil Rights Act, white males can have no grounds for discrimination lawsuits until they are statistically underrepresented in management and line positions. The 1991 Act, in effect, repealed the 1964 act by legalizing racial preferences as the core of civil rights law† (Roberts & Stratton). Regardless of good intentions, changing the past effects of discrimination is an unattainable goal. Women and minorities should be entitled to enjoy the same successes as the rest of the country, without the fear of being seen as the beneficiary of entitlements. Business owners should be free to make intelligent hiring decisions based on a persons skills and talents, without the fear of penalty from the government. As Marsha M. states, â€Å"Affirmative action is used not to level the playing field, but used to strong-arm employer's into jobs, raises and promotions for Black Americans and women†. The growing tensions that result from these programs continues to divide races, not bring them closer together. Allowing different sets of rules and lower Standards to separate people based on race or sex, defeats any efforts made toward finally ending discrimination. â€Å"Ultimately, either quotas will go or democracy will, because legal privileges based on status are incompatible with democracy's requirement of equal standing before the law† (Roberts & Stratton 177). Today every American has access to employment and educational opportunities. Americans live in a world of free enterprise where they can create their own successes. Americans have the means to achieve and succeed, they just have to have the drive and incentive to go out into the world and do it. As in every aspect of life some things may not come easily. Yet these experiences make one stronger and sometimes even more determined to achieve their goals. Individuals of any race should not use or misuse the color of their skin or sexual orientation for advancing themselves over others. Instead by using their talents, knowledge and sense of fairness to achieve their goals, affirmative action will become outdated.

Midterm Learning Reflection Essay

Introduction. You should print this out, although you may also use it as a template to type over. You will be writing two reflections this term: a midterm reflection and a final reflection. The final reflection is the one you want to have ultimately on your portfolio. Both your midterm and final learning reflections must be 700 to 1000 words, which is approximately two to three MLA-formatted pages. You can check your word count by going to Tools/Word Count on the menu bar. Style and Format. The writing style of the learning reflection is primarily expressive, but will also contain narrative elements. You do not need a Works Cited page unless you cite something. So, if, for example, you cite song lyrics, one of our texts, a poem, or even a work of art, then you need a Works Cited page. I’ve included one here to serve you for formatting purposes. File formats. We are going to be learning how to convert Word documents to pdf format so that they load more easily in a browser window. If you can, please practice with one or both of the following two methods, which are what I use (they are free). 1. Install a free pdf converter. These are not truly â€Å"free† in that they either force you to look at some advertising or they add a line on each page advertising the manufacturer of the software. I don’t have a problem with either of these and gladly suffer through the free advertising every time I convert a file to pdf, which I do all the time. The one I use to create all the pdf files for my classes is at http://www.pdf995.com/download.html. Download both the Pdf995 Printer Driver and the Free Converter (they are both free; they are required to work together, but for some reason, they are two separate downloads). After you go through the download and installation process, every time you want to create a pdf file from Word, all you need to do is select File/Print and then chose PDF995, which will show up as a â€Å"printer.† When you initiate this process of creating a pdf file, you will be prompted for a place to save the file, as well as a file name. Be careful to save the file to your H: drive or, if to your C: drive, to ftp (transfer) it over to your H: drive later. You will notice that some advertisements come up as the conversion process occurs. That’s the â€Å"price† you pay for the free conversion software. 2. The other pdf-conversion method I like is to use the free OpenOffice word processing software. This software should be in our labs. You can also download it for free on your own computer, from http://www.openoffice.org/. This is basically an open-source version of Microsoft Office. Once you’ve installed it (it’s large and takes a while to install), you can open any Word document with the OpenOffice word processing program (Open Document). Some of the original Word formatting may be lost – especially the header information with your last name and page number. You will need to add that back in; be sure you do it correctly. When you’re satisfied with the format, there is a little pdf icon on the toolbar that you can click, and that will automatically convert the document to pdf format. Learning Reflection Content. What should you discuss in your reflection? In general, you discuss what you’ve learned, what you’ve done especially well, what you’ve enjoyed – and the challenges you’ve encountered and how you might make changes in the future. Here are some suggestions for what to write about: †¢ Your experience transitioning from high school (or wherever you were previously) to a freshman in college, focusing on how you have grown as an individual and an independent student. †¢ Your experience in this particular course – your year-long freshman inquiry. In this regard, you should probably focus on the University Studies goals and the ways in which you have grown and developed with respect to those goals. I would expect that other courses have also contributed to the goal areas, so you might want to highlight any that have been particularly useful in that regard. †¢ Other experiences as a student here at Portland State. Portland State University’s mission is â€Å"Let Knowledge Serve the City,† which reflects the fact that we are an urban university. What have you learned with respect to community, diversity, and the connection between a learning community (the university) and the city in which it is located? Keep in mind that you may have acquired valuable experiences outside of the classroom, but still connected to your identity as a student. o Perhaps you have learned important lessons about discipline and time management as a student athlete, which may serve you well when you enter the workforce. o Maybe your involvement in activities with other students – such as taking dance classes or playing in the band or spending hours in an art studio or toughing out chemistry and physics labs – has improved your personal skills and brought to light new areas of interest, which you’ve pursued in your free time. o Or perhaps you’ve found out that you are a loner, that you haven’t connected very well with a lot of the people in your classes. As you reflect on this (or any other conclusions that some – maybe you – might consider, well, depressing), think of this is an opportunity to think of ways to make some changes in the future. †¢ A reflection, in other words, should include a self-assessment element as well as thinking along the lines of â€Å"What could I do better or differently in the future?† Consider the challenges you’ve faced, how you’ve overcome them, or how you’d like to overcome them in the future. Conclusion. Your reflection should end in a way that gives the reader the sense that you are closing up a chapter in your life and ready to move on, with some ideas in mind of what you might do differently. My suggestion is that you do not spend a lot of time critiquing the world around you; after all, you can’t change that very much. Confine your reflection to you and what you have learned and experienced. Dwelling on what you don’t like about a given course or program is not a reflection about you, but about something else. Works Cited Eakin, Paul John. How Our Lives Become Stories: Making Selves. Ithaca and London: Cornell UP, 1999. Fiske, John. â€Å"Popular Culture.† Critical Terms for Literary Study. Ed. Frank Lentricchia and Thomas McLaughlin. Chicago: University of Chicago Press, 1995. 321 – 335. Harrison, Claire. â€Å"Hypertext Links: Whither Thou Goest, and Why.† First Monday. 7 Oct. 2002. 10 Feb. 2004 .

Enterprise and Entrepreneurial Management Essay - 4

Enterprise and Entrepreneurial Management - Essay Example Yankee Clippers is a revolutionary innovation in men’s grooming, providing a variety of beauty services and products to the male clientele. The target market is the youthful male consumer, between ages 16 and 35, a market segment with the most revenue earnings potential for this business concept due to specific market characteristics, socio-economic demographics, and lifestyle relevancy associated with this brand concept. Outside of the traditional hairstyling service dimension, Yankee Clippers will offer consultation services, skin peeling and bleaching, and provide in-house merchandising talent as part of the sales model to generate more direct salesmanship and higher profitability through product sales commitments achieved with in-store patrons. Consultation services for men seeking beauty enhancement will generally occur via appointment in which 30-minute or 60-minute consultations will be contracted. The essential brand philosophy of Yankee Clippers (the organisational mi ssion) is that men will benefit from taking more proactive responsibility for grooming and beauty, offering consumers social competitive advantage through Yankee Clippers expert beauty systems operational model. Yankee Clippers will offer top-quality beauty and grooming products along a moderate pricing structure, procured from a variety of top-known beauty brands catering to the male consumer. The main branding goal of the organisation is establishment of service quality and product quality, which will ultimately provide justification for a premium service and sales model for the discriminating client in which beauty and grooming are significant lifestyle attributes and needs. Unlike other competition in this market, Yankee Clippers will differentiate through talent management modelling internally, exclusivity, and choice related to the premium positioning strategy. The beauty industry for men is growing explosively, providing excellent market opportunity so long as Yankee Clippers develops a strong emphasis on the marketing and promotional functions. In 1998, 42 billion USD were spent in salons (Hairstyles-7.com 2004). By 2004, nearly seven billion USD were spent on colouring treatments, hairsprays, shampoos, conditioners, and other relevant grooming products (Hairstyles-7.com 2004). This represents a significant market opportunity that continues to expand as more men become cognizant of the importance of grooming for social and professional growth. In 2010, as one example, L’Oreal experienced a 30 percent increase in sales revenue stemming from male grooming product sales (CBS Chicago 2011). The international and domestic sales markets for male grooming products continues to predict ongoing sales growth, in which Yankee Clippers believes it will be able to successfully capitalise to gain a prominent male-oriented, consumer-centric beauty business brand with superior competitive advantage in the local market. 2. Description of the business Brand recog nition and the pursuit of establishing brand loyalty and brand equity are the primary drivers of the Yankee Clippers marketing and sales model. In the UK, Yankee Clippers maintains minimal competition for male-centric beauty services, thus giving the business a competitive advantage immediately after launch. Marketing theory provides research-supported knowledge that brand loyalty is a product of companies that are

Personals IELTS Scores Coursework Example | Topics and Well Written Essays - 1000 words

Personals IELTS Scores - Coursework Example In this case, the math test is considered to be independent variable while scores of personal IELTS scores in listening and reading are considered to be dependent variables. The IELTS test can be defined as a high stakes selection test that is applied in measuring the proficiency in the English language of NESB students who intend to study in a tertiary institution (Hawkey 2006). The test report is based on the test performance and it includes a band score that is between 0-9 for every subtest as well as an overall score; the mean of the results. The IELTS which is considered as the admission tool is seen to have become popular for the past decade (Hawkey 2006)Null HypothesisThere is no statistically significant difference between the mean scores of personal IELTS scores in listening and reading when doing math test.Alternative HypothesisThere is no statistically significant difference between the mean scores of personal IELTS scores in listening and reading when doing math test.The table above shows that FMU6PA group has a mean score of 7.5 and 8 for listening and reading respectively. The standard deviation is also 0.39 and 0.3 respectively. This means that the variation in listening data is higher than that of reading. The median and mean is almost the same for reading and this implies that the data is normally distributed. The table above shows that Foundation science group has a mean score of 7.7 and 6 for listening and reading respectively.

Article of Jennifer A Colemans Essay Example | Topics and Well Written Essays - 1250 words

Article of Jennifer A Colemans - Essay Example I can vouch for the validity of this argument since most females I come into contact with are always complaining about how ‘fat’ and ‘ugly’ they look. This sort of thinking can be potentially damaging to the human psyche. In the concluding paragraph, Coleman states how discrimination on grounds of religion, race, ethnicity and sexual orientation are not tolerated with severe consequences for, for example, employers treating their employees this way. She laments that discrimination due to weight is not only tolerated, fat people are taught to accept it as their due, the whole thing being reinforced by the attitudes of people in our daily lives. I can relate to this sort of singling out and do agree that such ‘offenders’ are allowed to go unpunished. A joke about fat or over-weight people is as disturbing and as wrong as a racial comment. I also agree with Coleman when she says that such behavior should not be tolerated, though I must admit I am n ot overly fussed when such remarks are directed towards me. Finally, I want to state that a person’s body type or their weight is not an indicator of their personality. People should eat healthily and stay fit for their own sake and not because they want to please others. The main difference between Coleman’s approach and mine, when it comes to this issue, is that I do not take the opinion of others so personally, nor do I think it is my duty to conform according to what society tells me. If one is comfortable in their own self, there is no way society can make one feel bad.

Similarities between Odysseus and Creon Research Paper

Similarities between Odysseus and Creon - Research Paper Example In this paper, similarities and differences of Odysseus and Creon are defined. Creon and Odysseus appeared to be flawed in their character. Creon appeared to have excessive pride. He claimed to have exclusive power to give orders in the entire city. As the king, he was the only one issuing orders in the city. His character came out as domineering and insensitive. Creon is a strong leader who is stubborn. This causes him to be at loggerheads with his son, Haimon. He is blamed for the death of Haimon besides warning that he would never marry a lady of his choice as long as he lived. For king, Odysseus, his curiosity made him appear flawed. His curiosity caused him to get near Polyphemus. This resulted in the death of two men. He insisted on waiting for a giant at the Cyclops cave. The death of king Oedipus did not end the desire by his family to continue occupying the palace. Creon shows public support for Eteocles while he announced that Polynices is an enemy of the state. However, he sets a trend of revenge and death in the family. The daughter of king Oedipus defies the order of Creon. The order to execute Antigone faces opposition from Haimon, Ismane and Teirresias. For king Odysseus, the biggest setbacks in the journey home came from the gods who accused him of insensitivity to their needs. Both characters suffer from not meeting the set out expectations. Another striking similarity about both characters is that they get punished in retribution for their crimes. Their punishment exceeded the crimes they committed. Creon was left by himself after he was bereaved of his kinsfolk. This came after he punished Antigone (Beye, 17). According to Creon, Haimon was so young to die. The queen was reported dead according to a messenger. Most of the family members committed suicide leaving him alone. This appeared to

Middle Class Societies Of America And England Essay

Middle Class Societies Of America And England - Essay Example Therefore Roosevelt became the first president to support the labor and assigned the government a direct role and duty to all the people. The new women's colleges were opened and there the female reformers were educated. These females who were white middle class young women handled the "problem " of Immigrant, who constituted "dark skinned" Italians, peasant Jews and immigrants from southeastern Europe. The middle class women were barred to possess the professional educational qualifications pursue Consumer's League, and "Americanizing" centers known as settlement houses. These organizations targeted to wipe off the corruption and vice bred by the men their career. So, the women formed into groups and had built themselves as associations to take active part in the public life. Some of the associations are Women's Trade Union League, the Women's Christian Temperance Union, and the National. The women succeeded in their campaign to get the right to vote. But their battle of suffrage lasted for as long as from 1848 to 1920, in the year 1920 nineteenth amendment granted 26 million women, half of the nations population, the right to vote. The Fourteenth Amendment sanctioned the citizenship to the blacks. The Civil Rights Law of the 1960s was stepping stone for those who fought for America's promise of equal rights for all. The movement of women, for suffrage began at Seneca Falls. The American Society challenged severely the efforts of women that they cannot cross the threshold of men. But as the situation prolonged, the women got educated, and their movement turned out to be a respectable one. By 1910, the movement developed into a mass movement. In England too it was the same condition, the women were aggressive to sweep out their miseries and were carrying their movement for fundamental rights. In both the nations, by 1919, the Amendment Act was passed for women granting their right to vote. Detroit, the city was known as the "arsenal of Democracy" during the Second World War. The city of Detroit required a large number of labor who came from Africa. They were not given accommodation and like this the riots erupted which turned to be the bloodiest in the history of he nation. This racial conflict has begun very long past in 1863 and lasted till 1941. The racial riots have a long history in Detroit. There were about 200,000 black labors, constricted to sixty square blocks and compelled to live under dreadful sanitary conditions. Awfully the place was named as Paradise Valley while it was a hell for the inhabitants. There was an integrated amusement park. It was known as Belle Isle. This was the place where the Detroit riots began at this particular spot. The rumors still aggravated the situation and mainly because of the police sergeant spread some rumors regarding a women and her baby over the Belle Isle bridge, the black retaliated, looted, destroyed white owned stores, white skinned people were attacked without discrimination. Similar way white also retaliated in the same way. The situation continued without any holds, Detroit became practically a hellhole until Mayor Edward J. Jeffries called more than six thousand federal army troops was stationed throughout the Detroit city. Practically Detroit city was shutdown, streets deserted, schools deserted, no

LEADERSHIP STRATEGIES Coursework Example | Topics and Well Written Essays - 1000 words

LEADERSHIP STRATEGIES - Coursework Example During the process new leaders are made for the future through proper training and experience. Any organization that is in its finest today whether it be, Apple co, Microsoft, Zara was the result of one or more individuals in their early thirties who possessed leadership qualities. While it is true that for a company to be created and be successful it needs to have something to sell, at the same time they need a great leader. A fine example is the late Steve Jobs who did not create any of the Apple computers but steered them into the right direction with his social intelligence and his eye for design. Change management however, is needed in any and every company that wants success in the long run. It simply might be needed because the customers are bored of the monotonous product that they’re being offered or a more complex reason might be because intrapreneurship is needed in the organization because the previous management system wasn’t effective enough. Sometimes the change might be needed because the competitors have caught up and you no longer hold a competitive advantage. Having discussed leadership and change management, it is true that an organization cannot survive without either one of them. Any organization that comes into being is very informal in the beginning, starting off with very few employees, mostly friends who share the same ideas and visions, working in a small office consisting of a mere two or three rooms. Some of these organizations even start off from the garage of a home. The environment of these organizations is very informal which works in the beginning as they only need enough revenue above breakeven to invest further into the workings of the company. When this organization has matured and has enough employees to push out of a city or district it needs to change from an informal management to a more formal one. This is achieved by hiring leaders or identifying leaders among

Opinion Writing Essay Example | Topics and Well Written Essays - 3000 words

Opinion Writing - Essay Example 3. I have also been asked to advise OTW in relation to a contract it entered into with BKD another company where Daniel was also a majority shareholder and director but without the knowledge of OTW. I am asked to advise on whether there was any irregularity in the contract and if so what should be done about it. 4. OTW is a private company limited by shares formed in 2010 by five individuals; Daniel, Umar, Janet and Zainab. The shares of the company are owned equally and each shareholder was issued with 6 ordinary shares of  £1 each. Each shareholder paid  £10,000 for his shares -  £1666. 67 per share. Each of the individuals was also a director of the company. 5. In 2013, two of the individuals stopped any active involvement in OTW. They decided that in their opinion, the company was not going to succeed. The remaining three individuals are still hopeful that in the short to medium term, OTW will become profitable. 6. The first individual to leave the company was Alex who had sold some equipment to the company when it was formed. The equipment was bought at the price of  £8,000 which was its market price. OTW sold the equipment back to Alex at a price  £8,000 when he left. The transaction regarding the equipment is noted in board minutes, but no other paperwork exists in respect of it. 8. The amended articles provide that where a person ceases to be a director, any shares that he holds are to be offered for sale to the company and the other shareholders at a price calculated using the net asset value of the company. 9. The net asset value of OTW on its most recent accounts is  £46,850. Article 26A of the company’s articles provides that the company’s shares are to be sold at a transfer price, which is the net assets of the company indicated in the last audited accounts divided by the number of ordinary shares. 11. Stock transfer forms were

SLP - 1 ADDING VALUE TO THE ORGANIZATION Essay Example | Topics and Well Written Essays - 500 words

SLP - 1 ADDING VALUE TO THE ORGANIZATION - Essay Example To Wegmans Food Market, Inc., its workers are the most significant people followed by its clients. Many organizations put it the other way, where their clients come first and then its employees, but not Wegmans Food Market, Inc. In Wegmans Food Market, workers are considered as an asset to improve efficiency of their social responsibility approach. HR policies, together with its practices, are always connected to the strategic organizational goals. The organizational practices and policies should, at all times, be aimed at improving the individual performance every worker (Becton & Schraeder, 2009). HR should make sure that workers are treated equitably and fairy. Practices and policies in an organization influence how workers relate and interact with one another (Becton & Schraeder, 2009). For instance, in Wegmans Food Market, Inc., the organization typically employees part time workers without any intention of shifting their condition to full time workers, which can significantly cause a huge employee turnover (CNN Money, 2011). HR strategies are the methods by which the organization’s human resource specific tasks are executed (Wilton, 2010). There are â€Å"HR function strategy† and â€Å"people strategy† in any organization that has HR strategies. People strategy applies the relationship of the HR policies, as well as the overall realization of the organizational objectives. According to Becton & Schraeder (2009), functional strategy arises in a situation where the policies HRM are applied for the attainment of departmental goals, as well as the effective management of the workers in the organization. Wilton (2010) argues that there is hard HRM strategy, as well, whereby the workers are considered the same as any other significant resource in an organization or even soft HRM strategy in which every worker is treated as a special resource. All this strategies can be seen in Wegmans Food Market’s HR strategy. However, in

Media Violence Essay Example for Free

Media Violence Essay Introduction   Ã‚   A number of psychological problems are surfacing these days, especially concerning the younger generation. The open viewer ship of television, movies playing video games instill young children with the aggression violent energy of the show. It has been deduced through extensive research that children who view more media violence are more verbally physically aggressive becoming more anti social as the years pass. â€Å"Media violence exposure is described as a risk factor for aggressive beliefs and behaviors, and it is argued that media violence exposure in combination with other risk factors for aggression (e. g., hostile attribution bias, sex, prior aggression) can produce an effect greater than any single risk factor alone.† (For further review Gentile et al 2004)   Ã‚   Psychologists have been conducting researches to learn more about the physical mental effects of violence through media. The intense antagonistic music, lyrics videos affect the viewers most negatively regardless of their age. Even the cartoons which are meant purely for children’s viewing have turned aggressive boisterous. In classrooms students are getting into fights with co- students forming cliques comprising of most popular un- popular students all derived from the latest TV series. This impact is seen in girls more than in boys; however the boys are more into the aggressive attitudes physically. The matters to be discussed are: How the media affects the minds of young children? What steps are being taken by the parents to control these consequences? What measures are the media related people taking so as to broadcast less violence in TV shows? The government officials dealings to solve this problem? The problems occurring due to this social learning; a process where an individual learns by watching imitating others instead of ones own experiences, by exposure to TV violence in the early years are numerous. Some main points to be highlighted are: Diminishing of the involuntary concern for another’s suffering. Losing the sensitivity towards violence aggression by becoming habitual. Imitating the violent acts as seen in the movie. Exhibiting a hostile attitude towards others. Prevalence of risk factor:   Ã‚   Due to the availability of many media options like cable television, DVDs, the ever progressing video games. Unlimited time is being spent in watching cartoon animated movies, which are becoming more sadistic as the technology advances; generating a number of behavioral, social emotional problems. At times the media simply provide a boom to an already disturbed child under stress due to family or school troubles. Often it causes severe psychotic disorders pervasive developmental disorders with a very low frequency which makes it difficult to identify the main causes. (Merrell K. 1999) Description of risk factor at different ages:   Ã‚   The risk factors in media violence are many observed differently at each age level also gender wise.   A research   concluded at 99% of American families have televisions at home, 87% a VCR,   54% children have televisions video games in their own bedrooms. Average time an American child spends per day, in viewing different types of media is 6 hours 43 minutes; of which 90 minutes each day is spent in playing video games. This deduces that they consume double the amount of time in watching TV playing video games then they spend at school annually. Children are mostly fascinated by the fantasies stories hence fantasy based games are the most popular among kids. The total estimation of the profit earned by the video games industry is a whopping $ 10 billion dollars a year, even crossing the gross of the ever popular motion pictures.    It has not yet been deduced how the media violence effects infants but it may cause them to imitate behaviors in a minimal manner, from what they grasp. Usually the viewer ship becomes stronger when they reach the age of two a half or above. That’s the time when they develop the ability to grasp the right meaning of what they view on television then incorporate it in their actions.    The children of age group 6 8 are most likely to be fascinated by what they view on media. They do not have the experience maturity to characterize between the real life fantasy hence; they feel infatuated by the fictional characters try to imitate their actions verbally physically. Many children, when asked what they want to be when they grow up, answer mostly the names of superheroes they watch admire on TV like superman or batman.   Ã‚  When the movie superman was released many children tried to copy the flying act by tying a cape around their neck jumping from a higher place. This ended up in a number of casualties therefore frustration on not being able to carry out the task, which the superman so flawlessly renders. This is not an only example; the horror movies children view also create negative effects in the young minds. When the movie Childs play was released, a huge number of children threw away their dolls had countless nightmares by imagining the face of chucky the evil doll feeling scared.    The young age is open to magical ideas fantasies. They consider the on-screen violence as reality, this though process gradually develops as the child ages the difference between reality fantasy diminishes. The TV is taking over the family moments. This development is progressing with great pace which is an extremely serious issue needs to be tackled controlled by the parents with the collaboration of the media related people.   Ã‚   The media viewing habits that the children develop at an early stage influence their life throughout the ages. The inspiration they take from the fast paced colorful cartoons movies will embark a feeling of aggression at a premature level. The exploring property of young minds fosters them to learn the violent actions of the characters emulate them themselves. This characteristic is further highlighted by the intense sounds music supporting the movie. Theory    The reality enjoyment level of the violence creates de-sensitization. It is a feeling when the individual, loses the feeling of compassion or sensitivity becomes oblivious to the violence being broadcasted in front of him. This process is cemented by the high levels of graphics being used in video games movies these days. The points or rewards on killing, blood showing body mutilation in video games are considered as normal undertakings.    Depression is considered to be the major psychiatric disease of the 20th century. (M. Abdel et al, 2006) This problem is becoming common in young children as well, mostly appearing during the teenage years, it intervenes with a child’s psychological, social academic functioning evoking a suicidal behavior. The signs are often showcased by a child exhibit frustration low tolerance. Various factors are materializing due to the media violence exposure in children: Epidemiologists who have been studying the factors of violence other common social issues discovered that exposure to violent media played a vital part in 10,000 homicides committed in the United States of America last year (E. Cook, 2000) Individuals preferring heavy metal music are more subjective to psychological disarray, substance exploitation, suicidal risk in the extreme stage during adolescence. The effects of interactive media like internet video games are more enduring persuasive on violent behavior than passive media like television as they have increased levels of aggression hostility having a tendency to make the individual insensitive to violence. An inclination towards using drugs indulging in unsafe sex, contributing to the widely spreading diseases like HIV aids, cancer of different types. Specific effects on children/adolescents     Ã‚  Ã‚  The students of middle school or high school, around the age of 12 to 17 are very much capable of theoretical thinking elucidation. However, when exposed to the world of media they do not utilize these mental abilities, making them as prone to media violence effects as younger children. By this age they get much independence by the parents, thus making them highly vulnerable to in appropriate media. This is more compelling for boys than in girls; however, girls too are being captivated into the same habits nowadays. They indulge in viewing media dealing issues in negative ways including loud music videos, horror often pornographic content.    A research conducted by the of Washington epidemiologist Brandon Centerwall, evaluated that among one- quarter one- third convicted young male criminals had consciously imitated the violent techniques they had seen on television.(Tepperman)   Ã‚  Ã‚   Some percentage of youngsters both male females who associate the media content with real life are more prone to becoming aggressive later in life, however they are less prone to identify with television characters doubt the reality of media at this age as compared to younger children. Whereas younger children, are much enthralled captivated by the aggressive heroes depicted in the media. Excessive exposure to strong media generates some particular effects on children like: The violent behavior might perceive them into becoming attackers. It may induce fear in the individual hence creating a victimized effect. The excessive viewing of violent content may make them insensitive ruthless to the belligerence happening around them in media or in real life. It can make them ambitious for yet more aggression violence by creating an effect of negative desire.    The children studying at elementary school level are very keen in recognizing patterns of the actions depicted in media especially cartoons which appeal to them the most. Their cognitive abilities make it a grave period to make conjectures about the vociferous content recognize motivations of the characters.    The society should show some concern to the risks encompassed being spread through media. The fact that a young mind learns develops aggressive behavior later becomes desensitized to it; has been proven by a number of scientific researches. The violence itself is not the attraction for younger children, the graphic content dramatic production features set up the hype. As young as preschool students view cartoons like Pokemon which has been banned earlier in many countries due to its violent theme.   Ã‚   The children not just enjoy the cartoons; they buy the merchandise games of their favorite show as well. Another factor that appears here is when the families who cannot afford such extravagance fail to comply with the Childs demands; it creates a sense of severance in him or her. This might induce him to steal or get into fights so as to hide this feeling. It has been noted by parents teachers alike, that when preschooler watch any stimulating action oriented content, they become more aggressive in their play. The teenagers have a predisposition to confront conventional authority making them vulnerable to interpret some television violence especially exposà © of suicide murders. Research findings   Ã‚   If we observe the viewer ship of programs like MTV WWE containing explicit matter, it is clear that children most exposed to these programs are verbally physically more aggressive anti social. Children viewing WWE are physically more violent get into more fights at school. Both the viewers showed decline in school grades. Girls surprisingly have a higher tendency than boys to get into fights. The steps that appear in children exposed to violence on media making them most likely to imitate it are: Identification with the hero the program itself. Fantasizing about the program creating one’s own stories on its bases. The aptitude to commit the act. Vulnerability and protective factor    The expansion of children’s media started in the early 1940s up till now comprises of television, video tapes, DVDs, electronic games, interactive soft wares. The visual media has flourished more as compared to the print media like comic story books. The 1990s saw a transformation of media into a more violent physically aggressive medium. The rating system that they used to label the content has not been implemented properly thus provoke the risk of violence in young children, often traumatizing them affecting their judgmental qualities.   Ã‚  Ã‚  The media portrays unrealistic concepts regarding beauty physical appearances as sales tactics. This is perceived by the young minds in a negative way propelling them to opt for unhealthy diets suffer body disorders psychological effects when they are unable to attain that look. Minimum 20 hours per week are spent in television viewing by an average American child not counting the time spent on movies, music, video games Internet. This association with media is promoting inactivity the children. Less time is spent on studies social life. The parents use the TV as a way to get the children out of the way. Especially mothers so they can complete housework with ease.    The use of tobacco, alcohol illicit drugs is represented as high glamour in the media. The characters of the movies or TV shows often shown indulging in them. (Clark, 2007) $6 billion $2 billion dollars are spent annually by the tobacco alcohol manufactures respectively in advertising their product. Educational messages are also broadcasted but on a much smaller scale.   Ã‚   Repeated viewing of the harmful content has been noted to lower emotional response to violence increase hostility in individuals. Studies have documented that desensitization results in reduced arousal and emotional disturbance while witnessing violence.   Ã‚   A survey conducted in Ohio, in 1998 of more than 2000 3-8 grade students showed that as the viewer ship increased the psychological effects like anxiety, depression posttraumatic stress increased as well. (Cantor, 2002) A normal American child witness more than 8000 murders on media by the time he’s 11, 75% of these show the murderer performing the act without any regret making the children either insensitive or fearful of the society’s negative acts. (Gentile et all, 2004)   A national survey in 1999 revealed that 62% parents of children ages ranging from 2-17 confessed their child being frightened by something they saw on TV. Strengths and limitations Surveys were conducted, strength is that research will have positive implications if steps taken to avoid exposure of media on young children. Our research limitation is that we have to rely on questionnaires for this study. Though every person who takes the survey we take consent to be truthful and honest, but still some people might not be serious in answering the questions.   Ã‚   The research we conducted brought out many views issues concerning the media’s violent nature by parents psychological experts. Many a times the results deduced by a survey are not 100% accurate due to the answers not being stated with honesty. Often parents hide their children’s problems so as to cast a positive likeable image in front of others. Thus, giving false information diluting the research. Further investigation should be planned executed to fully extract the true happenings. This can help in contriving the broadcast of media to promote positive points among its viewers. The studies should be devised with a broad view so as to cover all the aspects whether good or bad. Often the experts do not co-operate with the evaluators therefore the end results lack professional guidelines. Expert opinion is always required to cement the result of surveys strengthen the evaluation.    The researches conducted in schools proved to be quite remarkable helped in collecting physical psychological health of the children. The information given was backed by the annual report cards examination results of each student. More studies should be conducted in different level schools. It provides a beneficial lead in devising theories regarding the children. Future directions for research Further research is needed in this field and especially research must be conducted to study the effect of media on developmental psychology of children. Future research will reveal how violence in media is affecting children and the related frequency of occurrence of abnormal psychological disorders. This will help taking further steps to stop such media violence and avoid psychological problems.    The research conducted proves that moderate television viewing with parents check is rather favorable for the young children. The media can be used as an effective tool in teaching developing sound habits in children through parental guidance proper planning of the medium’s people. Parents can use the specific shows as guidelines to satisfy the child’s inquisition. Watching programs with good values ethics on TV can help the children understand the right way to behave.    However the media is being used in a limited way, the variety of messages that can be incorporated through the medium is being ignored. Changes must be designed to use the medium in a finest way. The gaps left by this research evaluation should be fulfilled by further researches that are extensively conducted.    Advertising entertainment industries represent the culture spirit of the respective country to the rest of the world must not be used casually. Parents teachers should come up with strategies to create a sense of understanding in the children from an early age.   The parents should realize what effects the movies content on TV are having on their children try to minimize TV viewing at home level. Some ways that may be incorporated by parents to limit children’s revelation to violence are: Restricting keeping a check on what their children view on TV Discussing the programs with older children or young adults to clear their minds of any confusion help them in expressing their opinions. Start a family oriented time by going for picnics, organizing a special lunch or dinner. Allow the children to watch TV for a selected time period only programs that are desirable for their viewing. Offer criticism on TV channels sponsors for showing in appropriate programs or content so as to force them to use proper censorship. Conclusion    The effects whether positive or negative concerning today’s media are out in the open. It is the duty of every individual to counter such issues raise their voices to control them. Many researches experiments are being conducted to realize the short-term long-term effects of violent media. Feelings of hostility, revenge, anger sprout in a young mind provoke him or her to retaliate. Many reasons that promote violence on media are present. Often the viewer the broadcaster thinks the effect is too minute to make a difference in anyone’s mind, nevertheless children are affected by the smallest of acts without worrying about its positive or negative aspect. The media declaring that that there is no understanding of the definition of violence among the people continue to showcase the explicit content. They further comprehend by saying they show what the people want to watch. Believing that violence shown on media is simply showcasing real life. This is mostly observed in news channels movies, where gruesome details of murder accidents are shown openly. Parents allow children to view violent content in the name of comedy, many well-liked shows illustrate this example such as the ever popular tom jerry cartoon which shows both the characters beating or pummeling each other References Anon., (May 28, 2003) Preventing violence by teaching non-violent problem-solving American Psychological Association, [accessed 1st December 2007] http://www.psychologymatters.org/bandura2.html Anon, (February 19, 2004) Violence in the media psychologists helps protect children from harmful effects American Psychological Association [accessed 1st December 2007] http://www.psychologymatters.org/mediaviolence.html Donald E. Cook, (September 13, 2000) Testimony of the American academy of pediatrics on media violence presented to the U.S. senate commerce committee http://www.aap.org/advocacy/releases/mediaviolencetestimony.pdf Douglas A. Gentile, David A. Walsh, Paul R. Ellison, Michelle Fox Jennifer Cameron (May, 2004) Media violence as a risk factor for children: a longitudinal study presented to the American Psychological Society 16th Annual Convention, Chicago, Illinois- pgs 2-5 Jean Tepperman, [January-February 1997]. What do children learn from media violence? Childrens Advocate newsmagazine, Action Alliance for Children Action Alliance for Children [accessed 1st December 2007] http://www.4children.org/news/1-97toxl.htm Joanne Cantor, (April 19, 2002). The psychological effects of media violence on children and adolescents Presented at the Colloquium on Television and Violence in Society http://www.joannecantor.com/montrealpap_fin.htm Kenneth W. Merrell, (1999) Assessment of other behavioral, social, and emotional problems: Behavioral, Social and Emotional Assessment of Children and Adolescents Lawrence Erlbaum Associates- Mahwah, NJ. Publication chapter 11, pg 275 http://www.questia.com/read/28160055# Laura B. Clark (2007) Influence on children media history of media for children, general considerations, studies of media influence, domains of influence, recommendations Education Encyclopedia http://education.stateuniversity.com/pages/2212/Media-Influence-on-Children.html Moataz M. Abdel- Fattah Abdel-Rahman A. Asal, (August 13, 2006) Prevalence, symptomatology, and risk factors for depression among high school students in Saudi Arabia copyright  © 2005 Europes Journal of Psychology [Accessed 1st December 2007] http://www.ejop.org/archives/2006/08/prevalence_symp.htm Wendy L. Josephson, (February 1995) Television violence: a  review of the effects on children of different ages for the Department of Canadian Heritage Reprinted with permission, by the Media Awareness Network. September 1997 [accessed on 1st December 2007] http://www.cfc-efc.ca/docs/mnet/00001068.htm

Maintaining a Childs Healthy Lifestyle

Maintaining a Childs Healthy Lifestyle 1) A healthy lifestyle is paramount for other children and adults to help prevent, or minimize chronic illness and diseases. A healthy lifestyle does not only include diet and exercise but also a healthy mental wellbeing, especially in children. It involves the connection of body and mind; self esteem, self-belief, confidence and building up a natural strength to help them cope during tough times. ‘Every child matters’ a government programmed, came into affect in 2001 to ensure children have access to health are services, to prevent violence against children in their home and in their community. It is also in place to alleviate child poverty. This program helps children with building confidence and creating support networks so they understand they are not alone. Leading a healthy life style can prevent diseases such as obesity, high blood pressure, diabetes, chronic heart disease, strokes, chronic obstructive pulmonary disease, and cancer; I will now explore these diseases and ways to prevent them. It is know fact that the rates of obesity are higher in children who do low levels of exercise than to those who do high, frequent levels of exercise. Exercise is very important for young children in order to keep their bodies from accumulating unnecessary fat, which can lead to chronic illness later on in life such as diabetes. Children who regularly exercise will benefit in better health, not just at present but for future years as their bodies and mind will be conscious of the healthy lifestyle choice they make. Lack of exercise, being over weight and, for adults, exercise alcohol consumption is big risk factors for high blood pressure. It affects approximately one third of the UK. High blood pressure can be treated with medication; however, most of these can produce side affects such as skin irritation, dizziness and feeling drowsy. Some people are able to reduce or even stop treatment if they are able to keep their blood pressure under control whilst on the medication. If patien ts were educated earlier on how to prevent this chronic illness with lifestyle changes then medication would not be needed. Type 2 diabetes is another illness that can be controlled by the individual and their lifestyle choices. Along with taking medication, a persons diet and regular exercise are things that need to be addressed. There are over 3.1 million people in England that suffer from diabetes (type 1 +2). It is important to get diagnosed as early as possible to prevent symptoms worsening. Simple things like keeping blood pressure down and weight are two key ways of preventing type 2 diabetes, however type 1 cannot be controlled. Coronary heart disease is the biggest killer in the UK, it occurs when fatty deposits block the blood supply to the heart. Smoking, having high blood pressure or having diabetes could all cause CHD. Although it cannot be cured there are treatments and lifestyle changes that can reduce further problems such as; lowering cholesterol and maintaining a healthy weight. Strokes can also occur when the blood supply is restricted from the brain. Strokes happen quickly and often cause disabling complications such as paralysis and permanent numbness. To reduce the risks of suffering a stroke it is advised that we do simple and regular exercise and maintain a healthy weight. In doing this we lower our chances of having a stroke. Smoking is a major factor towards strokes due to the arteries clogging with tar, which causes blood clots. Another illness that occurs due to smoking is Chronic Obstructive Pulmonary disease; this is a lung condition in which the airways become narrow and damaged. If a smoker stopped smoking after being diagnosed then the progression could be slowed down but not reversed. Keeping a healthy weight and controlling blood pressure along with keeping active and doing specialized breathing techniques are simple but affective steps to reducing the symptoms. Cancer research UK stated that ‘half of newly diagnosed cancers could be prevented by leading a healthier lifestyle, reducing alcohol intake, eating better, regular exercise, not smoking and safe sun practice.’ By following this simple piece of advice, the majority of these chronic illnesses could be greatly reduced. Smoking is also a major factor in the development of cancer, 86% of lung cancer deaths in the UK are being attributed to smoking. Research from The International Agency for Research on Cancer has shown that smoking can cause cancer in the liver, mouth, pancreas, stomach, bladder, kidney, cervix, bowel and ovaries. Obesity is a risk factor for several types of cancer; breast, uterus and kidney. Research shows many chronic diseases are increasing with poor lifestyle choices made by individuals. Education when we are young on how to make good lifestyle choices could greatly reduce the risks of people inflicting these debilitating illnesses upon themselves. 2) Eating a healthy and balanced diet is a strong foundation for a happy child. Making sure that people has the basic knowledge and understanding for a nutritionally balanced diet will help protect them against chronic illness and even behavioral difficulties. Many people are familiar with ‘5 a day’, which encourages us to eat five different fruit and vegetables a day. However there are other groups that need to be included to make up a nutritionally balanced plate. These groups are`; Fruit and vegetables Fats i.e. butter and oils Sugars Protein Carbohydrates Carbohydrates are a great source of nutrition such as vitamins and iron. Wholegrain varieties are high in fiber, which assists with regular bowel movement, and it helps manage weight. Pulses and lentils also contain fiber along with being low in fat and high in protein. Protein is necessary for growth and to help repair body cells. Another protein is dairy, which contains calcium; essential for healthy, strong bones. The fat in milk provides calories for young children and has important vitamins (B2+B12). Cows milk is not advised for children less than 12 months due to them not being able to digest the protein. Breast-feeding until the infant is at least 6 months is recommended by ‘The Department of Health’ or formula powder to insure the infant is getting the correct nutrition. The National Diet and Nutrition Survey suggest that adults and children are consuming more sugar than recommended. The sugars in chocolate and fizzy drinks are bad sugars, which can cause tooth decay (a very current problem in our country). There are naturally occurring sugars that, in moderation, can be beneficial to our bodies, these sugars are found in milk and fruit. The most important and vital food in our diet is fruit and vegetables, as they are a major source in vitamins and minerals. They are beneficial in a variety of ways; lowering risks of many illnesses and diseases such as strokes and also reducing the risk of kidney stones. Another important food is meat. Lean mince and fish are healthier options, as they are good sources of vitamin B, zinc and iron. Fish also contains fatty acids, which our body uses to keep cholesterol low. Oils and nuts also provide fats that keep low cholesterol; many vegetarians eat lots of nuts, pulses and quorn to maintain similar levels of these essential vitamins. Insuring a mixture of all these important food groups will not only keep a balanced and healthy diet but also will insure the body has the necessary tools to best fight off illness and maintain high energy levels. Children benefit greatly from eating healthily as it improves confidence with self-image; steady and healthy energy levels and can help refute behavioral problems. Being aware of healthy eating improves child’s chances of eating a nutritional food as they progress from childhood to adulthood. 3) to help maintain a healthy life style it is beneficiary to exercise. Exercise burns calories and helps build up strength, without exercising your body and muscles would turn into fat and the organs would become unhealthy. Young children can do many different activities to help prolong a healthy and happier life. Joining football clubs, swimming groups or youth groups. Research from ‘The Lancet Paper ‘ showed that as little as 15 minutes active play per day is all an infant needs to prolong a healthy life. Babies should be encouraged to move around independently by floor play or crawling as often as possible. Having this freedom allows them to strengthen trunk muscles, improve on concentration and move kinesthetically. Crawling also trains their eyes to look both near and far, this is essential for developing binocular vision. Swimming is another activity that builds on trunk muscles and also social skills. Sessions with mother and infant are great ways to initiate bonding and interaction with other mums and babies. Swimming uses trunk strength that improves infants’ balance and muscles development. Physical exercise can also improve breathing techniques; it strengthens the heart and lungs. Outings to indoor play centers and leisure centers are other ways of allowing kids to exercise; they run around with friends and other children. Free play also promotes a Childs imagination and creativity; many adventures to jungles and fairy tale worlds can take place in one Play Park. By following a child’s own ideas and other children’s imagination increases a child self esteem and self-awareness, this contributes to a happy, healthy child. Children can also take part in daily activities at home such as helping with gardening, tidying up and even helping with vacuuming, this it all classed as daily exercise but they can be created into fun activities to do with parents, especially when their parents don’t have much free time, school are getting behind this idea to encourage bonding between children and busy working parents. The government has a duty to protect and promote play opportunities for children and young people. The right to play for al children up to the age of 18 is enshrined in article 31 of the UN Convention on The Right of the Child ratified by the UK Government in 1991. With this law in place many swing parks, play grounds, football fields and more recently skate parks. These areas are for children of all ages to exercise/play and develop social skills. Clubs that teach sports are all essential in building confidence, help to focus their attention and problem solve, these all contribute to strength in mind and emotional development. Research at Monash University 9part of the National Sleep Foundation) proved, in 2009, that children who take part in daily exercise sleep better at night. ‘In addition to falling asleep faster, very active children slept longer throughout the night’. This quote concludes that active children benefit through all aspects of growing up and staying healthy and when they active this at a young age it teaches them good habits which they will use through their whole life. 4) Well being is; the state of being comfortable, healthy and happy in oneself; a person being comfortable with their existence. A childs well being can have a significant impact on their progress throughout their life. Social and health services aim to use a holistic approach when assisting children and their families. They look at all parts of the child’s life; home, school, psychological, physical and even spiritual being to find a way to best help the individual. Workshops are run for parents such as the ‘positive parenting program’ which looks at dealing with family bereavement and spotting signs of emotional stress, conflict in the home and strategies to help build confidence in their children and harmony in the house so everyone feels comfortable to express themselves in a save environment. Parenting can be exhausting and sometimes isolating so by using these free workshops it can greatly enhance the wellbeing of the parents, and ultimately, their children helping achieve a healthy wellbeing for the future. A report published by The National Institute for Clinical Effectiveness, in 2008, wrote ‘childrens social and emotional wellbeing is influenced by a range of factors, from their individual make up, family background to their local community within with they live’, with this in mind we can now find many charities like ‘BIG’, a lottery funded charity, that gives thousands of pounds every year to help continue many different project that work to strive positive mental health, physical health and strong social networks in our communities. There are programs that travel around schools and talk to troubled children about family separation, depression and many other issues. All these groups and workshops ensure that if and when a family needs help in maintaining the wellbeing of their family unit, they have financially achievable opportunities to meet in a secure, non-judgmental and confidential environment. A place they can discuss the issues and work with practioners on improving skills to enhance the wellbeing of their children and family unit. Reference www.healthline.com www.healthyforums.com www.oxforddictionary.com www.bigltteryfund.org.uk www.ehow.com www.psychologytoday.com www.medcentral.org www.babycentre.com www.science.howstuffworks.com www.sleepfoundation.org www.everychildmatters.org www.encyclo.co.uk The foundations of child development Working with children in the early years

Substrate On Rate Respiration In Saccharomyces Cerevisiae

Substrate On Rate Respiration In Saccharomyces Cerevisiae The aim of this investigation is to examine what effects different substrates have on the respiration of yeast. I will investigate this by measuring the amount of carbon dioxide evolved during anaerobic respiration. The volume of CO2 gas will be collected using a gas syringe. BACKGROUND INFORMATION YEAST Saccharomyces cerevisiae, also known as yeast, is a micro organism that uses saprophytic digestion to break down substrates. This is achieved through releasing specific enzymes to break down specific substrates, but if yeast does not contain a certain types of enzyme then it cannot break down its substrate. The more the enzyme of a particular substrate, the faster the rate of breakdown and therefore the more CO2 is produced. This will help me to test how much CO2 each substrate produces. Yeast can also respire aerobically and anerobically depending on the availability of O2. If there is plentiful of O2 then yeast would respire aerobically with sugars, producing H2O and CO2 as waste products. However, if no oxygen is available then the fermentation would occur which converts sugars into CO2 and ethanol. RESPIRATION Respiration is the process by which energy is released energy from glucose in the presence of Oxygen, forming carbon dioxide and water as waste products. Glucose releases energy in a series of reactions that take place inside components of the cell. The stages are briefly explained below: GLYCOLYSIS To get the sugar in a more reactive form it is produced to fructose-1,6-bisphosphate by the addition 2 phosphate molecules. This process is a phosphorylation reaction. The fructose-1,6-bisphosphate is then broken down into 2 molecules of glyceraldehydes-3-phosphate, which comprises of 3C each. The glyceraldehydes-3-phosphate converted into pyruvate via the oxidation process where each GAL3P molecule releases 2 hydrogen ions and 2 electrons. The electrons are then transferred to NAD to produce NADH (reduced NAD) and the energy is used to produce 4ATP from 4ADP and 4Pi. Finally there is a net yield of 2 molecules of ATP, and 2 molecules of pyruvate which is used in the link reaction and 2 molecules of reduced NAD which carries on to the link reaction. LINK REACTION In the link reaction the 2 molecules of pyruvate leave the cytoplasm of the cell and enter the mitochondrial matrix. This is an oxidation reaction where 2 NAD molecules oxidise 2 pyruvate molecules into 2 acid molecules. These 2 molecules of acetic acid then go on to combine with 2 coenzyme-A molecules to form Acetyl Co enzyme A. in the end of this stage 2 molecules of reduced NAD form, 2 molecules of CO2 is lost and most importantly, Acetyl Co enzyme A is formed through the conversion of pyruvate. This is then used in the next stage of respiration. KREBS CYCLE At the start Acetyl Coenzyme A , combines with Citrate Synthase an enzyme as well and a 4 carbon molecule called oxaloacetate, forming Citrate. Then, Citrate goes through the process of oxidative decarboxylation which forms a 5 carbon molecule called oxoglutarate.at this point NADH is produced and CO2 is removed. In the latter stages of the krebs cycle, the oxoglutarate is changed into a 4 carbon oxaloacetate molecule. NADH is made and 1 molecule ATP is also made. The volume of CO2 that is produced in the krebs cycle is important as this is the dependant variable. ELECTRON TRANSPORT CHAIN In this stage all of the NADH and FADH that has been produced in the previous stages is converted into ATP. This takes place in the cristae of the mitochondria. The NADH and FADH electrons move. When the electrons pass from one carrier to another, a series of reduction and oxidation reactions take place which releases energy in the process. This energy is used to pump H+ ions from the matrix into the intermembrane space, thus creating a gradient where the concentration of the H+ ions in the intermembranal space is higher than it s in the matrix. The inner membrane contains enzymes called ATP Synthase and The H+ ions diffuse through these enzymes causing energy to be released which is used to synthesise ATP through phosphorylation. The process is called because the final terminal electron acceptor is oxygen which picks up the electrons from the chain and the H+ ion from the matrix to form H20 as a waste product. This reaction is catalysed by the enzyme Cytochrome Oxidase For every NADH which enters the chain and is oxidised by NADH dehydrogenase, 3 ATP are produced. For each FADH that enters the chain, 2 molecules of ATP are made. ENZYMES Enzymes are proteins that can effectively increase the rate of a reaction by lowering the required energy (activation energy) needed in order for the reaction to occur. Enzymes have a tertiary structure which decides the shape of the active site. The substrate must be specific to the active site because if they were not complementary to each other, then the substrate can no longer bind to the active site, thus the enzyme substrate complex does not form. The performance of enzymes can be affected in several ways some of which I have explained below. TEMPERATURE An increase in temperature will cause an increase in the rate of reaction because both the enzyme particles and substrate particles have gained kinetic energy. This will result in the particles to move faster, thus increasing collision frequency and the numbers of successful collisions as the particles have the required activation energy. If the temperature rises above the optimum temperature then the enzymes can become denatured. This happens because the enzyme molecule vibrates more causing the weak hydrogen bonds (holding the 3D structure of the enzyme together) to break. This eventually leads to the shape of the active site being altered. Consequently, the substrate will not be able to bind with the substrate as the shape of the active site is no longer complementary so the substrate enzyme complex can not form. This is important in my experiment because if the yeast (enzyme) was to become denatured then it would not be able to bind with the substrate (e.g. glucose) and the react ion would not be catalysed, preventing any CO2 from being formed. I must ensure that temperature is kept constant throughout. PH Another factor which can affect enzymes is pH. Enzymes also have an optimum pH which is pH enzymes work best at. Changing the pH can change the tertiary structure due to the number of H+ ion in an acid or the OH- ions in an alkali. These ions disrupt the hydrogen and ionic bonds between -NH2 and -COOH. This will cause the tertiary structure to break down and changing the active site in the process. Once again, the substrate will no longer be able to bind with the active site, hence no substrate enzyme complex will form. I intend to use a buffer solution which will resist any changes in pH. SUBSTRATE CONCENTRATION Increasing substrate concentration increases enzyme activity as they are more molecules to occupy the active site, thus a faster reaction. If more enzyme substrate complex forms then more CO2 will be produced. However this is occurs only for a certain period until all the active sites are saturated with substrates. Therefore an increase in substrate concentration will not result in a increase in the rate of reaction. PLANNING THE DEPENDANT AND INDEPENDENT VARIABLE The dependant variable will be the volume of C02 produced during respiration and the independent variable will be the substrates that I decide to use in the experiment. These are Glucose, Fructose, Maltose, Lactose and Sucrose. NULL HYPOTHESIS The substrates will have no effect on the volume of CO2 produced during the respiration of yeast. HYPOTHESIS As the substrates are changed, the volume of CO2 formed during the respiration of yeast will also change PREDICTION I predict that of all my substrates, maltose will produce the greatest volume of CO2 when added to yeast in a fixed amount of time. Referring to my background knowledge, I know that glucose and fructose monosaccharides which can be directly absorbed by the yeast as no enzymes are required to break them down. This will allow for glycolysis to take place quicker. However I think that glucose will produce CO2 quicker than fructose because glucose is the main food source/ respiratory substrate for yeast, thus there will more glucose carrier proteins present in yeast. If more carriers are present then will enable absorption to occur quicker, hence respiration will happen quicker. So I believe glucose will produce more CO2 than fructose within a given time period. However in terms of volume of C02, I believe maltose will exceed both of these monosaccharides. Maltose is a disaccharide that consists of two glucose molecules held together by a glycosidic bond. Once this bond is broken down by maltase, there will be twice as many glucose molecules available in the same volume of other substrates such as glucose. More sugars can then be provided for respiration, hence more CO2 produced in 45 minutes. One point that must be taken into to account is that maltose cant be used directly, so it could take time before the glucose can be used. In addition, as glucose is a polar molecule it must be transported via facilitated diffusion. This could be a limiting factor if all the carriers become occupied, which would slow down the respiration process as a result. After fructose, I predict sucrose will be the 4th substrate to produce the most CO2. Sucrose is also a disaccharide which consists of a glucose and fructose molecule. This substrate also requires enzymes to break it down and this could be a time consuming process as there is a limited amount of time. Furthermore, there arent as many fructose carrier proteins present in yeast cell membrane compared to glucose. Finally I predict lactose will produce the least amount of CO2 purely because yeast doesnt contain the enzyme lactase to digest lactose. This means that its monomers galactose and glucose cannot be used in respiration, thus no CO2 will be produced as a by-product. APPARATUS The following apparatus will be used when conducting the experiment: Clamp and stand Gas syringe accurate to 0.5cm ³/mol Water bath heated to 400C Dry Yeast Thermometer Boiling tubes Safety goggles Universal indicator Distilled water Buffer solution (slightly acidic) Substrates Electronic weighing balance (2 d.p) Stop watch Rubber bung and rubber tube Pipette (15cm3) funnel Measuring cylinders ( 250cm3) Stirring rod Conical Flask Beakers ( 250cm3, 20cm3) METHOD OF INVESTIGATION Steps Accuracy Reason for method 1. Clean all the apparatus used to contain sugars or yeast using distilled water. Set up water bath at a temperature of 40 °C. N/A Cleaning with distilled water ensures that all the equipment to be used in the experiment is clean and is free from impurities that could possibly interfere with CO2 collection.The water bath will be set to 400C because this is the temperature that I have decided to use in my experiments. 2. Fill up a 1 litre beaker precisely up to the 1litre mark with distilled water. Then add a buffer tablet into the beaker and stir thoroughly with a stirring rod Make sure the distilled water has been filled up exactly to the 1L mark. This is the step on how to produce a buffer solution. A buffer solution is required as it dissolves the yeast and substrate together. Allowing collision of the yeast and the substrate is vital otherwise a reaction would not occur 3. Weigh 30g of dry yeast using an electronic balance and transfer it into a beaker. The scale will be accurate to 2 d.p. to allow consistency. If a solution contains more yeast, then more collisions may be involved between the enzymes and substrate, hence a greater rate of respiration, and more CO2 being produced than there should be. 30g of yeast will provide a stock solution for all 15 experiments, thus each experiment will use 2g of yeast. Excess yeast cells in the solution, will cause a large volume of CO2 production as more respiration will occur so 2g is a suitable amount. Keeping a constant concentration of yeast will ensure that my test is fair because an increase in yeast concentration will increase the amount of cells respiring therefore the volume of CO2 will increase 4. Place 250cm3 of buffer solution into a 300cm3 beaker containing dry yeast. Stir thoroughly Ensure that the volume is read from the bottom of the meniscus level. The volume must be read at eye level I have decided to use a bulk buffer solution because it keeps the concentration of yeast constant. Errors are more likely to occur if I had to weigh 2g of yeast and 15cm3 of buffer solution before each experiment. I have also taken into account of any spillages that may occur so I have ensured that I have prepared more than the required amount. 5. Accurately weigh the amount of substrate needed using the electronic balance and place into a 20cm3 beaker. Then, using a pipette, collect 15cm3 of buffer solution into a measuring cylinder and add it to the substrate beaker. The solution should be stirred and the beaker should then be placed in the water bath. Before using the balance confirm that it has been adjusted to 0. The measuring cylinder will be accurate to 0.1cm3. Again, ensure that the reading is taken from the bottom of the meniscus and at eye level. I must weigh the correct amount of substrate so that the concentration remains constant throughout the experiment (1M) 6. I will Prepare the conical flasks and attach the rubber tubing (connected to the rubber bung) to the gas syringe. I will carefully measure 15cm3 of yeast solution with the aid of a pipette and transfer it into a conical flask. This will then be stirred thoroughly and placed back into the water bath. Pipette is accurate to 0.5cm3. The yeast has to be measured very accurately otherwise this would affect my results. For example if too much yeast is added, then there would be increase in amount of enzymes available and so there would be increase in successful collisions resulting in a faster rate of reaction with more CO2 being produced per unit time. The solution has to be agitated to ensure that the yeast molecules are evenly spread and do not settle to the bottom of the boiling tube so that the chances of collisions increases. The water bath will maintain the temperature of the yeast solution. This will prevent the enzymes from being affected by a change in temperature. 7. Use a thermometer to measure the temperature of both the water bath and yeast solution to ensure they are both 400C. As soon as the substrate is poured into the conical flask containing the yeast, immediately attach the bung onto the flask. This should be followed by timing using the stop watch. The stop watch is accurate to 0.01seconds. I have considered the difficulty faced when applying the rubber bung and starting the stop watch. I must make sure that I start the stop watch as soon as the bung is placed in postion and I intend to keep this the same for my other experiments. A rubber bung and the rubber tube will be attached instantly as respiration can occur immediately. The CO2 produced will be collected in the gas syringe. It is important that does not escape. if this did happen then a smaller volume of CO2 would be collected by the syringe, thus the results obtained would not be precise.The stop clock will need to be started immediately to ensure all the experiments go on for exactly the same amount of time, if one experiment was to go on for longer more CO2 would be produced and thus I would get anomalies in my results. To avoid this, the clock needs to be started as soon as the experiment begins. 8. Take readings after 5 minutes of the co2 collected into the gas syringe with the aid of a stop watch. This step should be repeated until the 45th minute for each experiment. The temperature of the solution must also be taken, which should remain constant at 400C. The readings must be taken straight after each interval. For example, I would take the reading just before the 5th minute interval. The Stop watch is accurate to 0.01seconds. The purpose of this step is to observe how much CO2 each substrate produces as time passes. 9. Using a universal indicator I will measure the PH after testing each substrate. The PH should constant throughout but if not, then it should still be recorded. The beakers, conical flask and measuring cylinders should be rinsed with distilled water after each experiment NA It is important to control PH as it could affect the amount of CO2. I will talk about this in greater detail in controlled variables. Rinsing removes any residue that may have been left over in the equipment CONTROLLED VARIABLES Controlled Variable How I will control it Why I will control it Temperature This variable will be controlled using a water bath which will be set to 40 °C throughout the experiment. The temperature must be controlled because the temperature will affect the rate of respiration of the yeast. If the temperature is changed, for example, too high then this may denature the enzymes used by yeast to digest substrates. pH The purpose of a buffer solution is to resist any changes in pH, therefore I will control the pH by add the yeast and substrate to a buffer solution. When CO2 is released, it would dissociate, forming hydrogen ions and hydrogen carbonate. These will cause the pH to decrease and become more acidic. A decrease in pH would affect enzyme activity as this disrupts the charges (H+ and OH-) on the enzymes. This will result in changes in the ionic and hydrogen bonds holding the enzyme together. The enzyme would denature, thus the substrate will no longer fit and so an enzyme-substrate complex will not form. Concentration of yeast used I will prepare stock solution of yeast (30g) containing 250cm3 of buffer solution. This variable can be controlled by simply keeping the amount of yeast (15cm3) used constant throughout the experiments. A stock solution will automatically eliminate any changes to the concentration of yeast since I will be taking the same amount of yeast from the same solution so it will always remain the same. Maintaining the concentration ensures that the same surface area is exposed by the yeast over which enzymes are released for extra cellular digestion to take place. Concentration of the substrate 15cm3 of a 1M substrate solution will be used constantly. If more substrate is added then more C02 would be produced. This is because there is more substrate available for the yeast to digest for respiration, hence producing larger volumes of C02 than it should. If this variable is not controlled then it I would not be able to determine if an increase in CO2 is due to the type of substrate increase in concentration. Timing I will time the experiment using a stop watch in all of my experiments. I will constantly time the experiment for a total of 45 minutes, ensuring that the reading is taken immediately after each 5 minute interval. I have to control this factor because if the yeast is left in the substrate for a longer time period for one experiment then this will allow more respiration to occur. The yeast will digest the substrate to produce more CO2 so therefore all solutions must be left to respire for exactly the same amount of time in order to obtain reliable results. Culture of yeast Use the same brand of yeast in all experiments. Different types of yeast may cause different results as the number of carrier proteins may vary for a particular substrate. Using the same yeast will ensure that the size of the yeast in each experiment remains the same. CALCULATING SUBSTRATE CONCENTRATION In order to keep the substrate concentration the same I will have to calculate the mass of each of my substrates. Firstly, I will use the following equation: Moles = Molarity x Volume 1000 The substrate concentration I will be using will be 0.5M and the volume will be 25cm3. In order to determine the mass from the number of moles I shall then use: Mass = Moles x Mr CALCULATIONS FOR GLUCOSE AND FRUCTOSE 1000 0.5 X 25 = 0.0125mol Fructose and Glucose has the same Mr of 180 0.0125 X 180 = 2.25g I need add 2.25 of each substrate into 25cm3 of buffer solution. I will produce a stock solution which will help maintain the concentration of the substrates throughout. I will be carrying out 2 experiments for Glucose or Fructose so I will need 4.5g of each (2 X 2.25 = 4.5g). CALCULATION FOR MALTOSE, SUCROSE AND LACTOSE 10000.5 X 25 = 0.0125mol Maltose, Sucrose and Lactose have the same Mr of 342 Maltose, Sucrose and Lactose are isomers consisting of two monosaccharides linked together by a glycosidic bond. I have taken into account that when a condensation recaction occurs to form this disaccharide then a water molecule is removed so I must substract the Mr of a water molecule from the Mr of the disaccharide. 360-18= 342 0.0125 X 342 = 4.28g So I will add 4.28g of Maltose, Sucrose and Lactose with 25cm3 of buffer solution. I will also produce a stock solution which will allow me to carry out the required amount of experiments. Therefore, I need to measure 8.56g (2 X 4.28g = 8.56g) of each substrate which will then be dissolved into buffer solution. CONTROLLED EXPERIMENTS I have decided to carry out 6 controlled experiments for each of the 5 substrate in conjunction with the normal experiments. I will conduct these experiments in order to demonstrate and prove that the process of respiration cannot occur without the presence of the respiratory substrate as well as the yeast. The first experiment will involving a boiling tube containing only the 25cm3 of yeast solution. After placing the boiling tube in the water bath (400C), I will then record how much CO2 is produced. This would be conducted in the same way as my method where I would take readings after every 5 minutes until the 45th minute has been reached. The other 5 control experiments will only consist of the substrates. I will measure 15cm3 of each substrate into separate boiling tubes. These will also be placed in a water bath and the volume of CO2 produced will be recorded at every 5 minute intervals for 45 minutes. No CO2 being produced will confirm that the yeast cannot produce CO2 with the presence of a substrate and a substrate cannot respire on its own. DATA ANALYSIS Below is an exemplar table which will be used to analyse the results produced in the experiment This table will help me to calculate the average of the CO2 produced in each of the experiments after every 5 minutes. I will produce line graphs using the averages of CO2, which will enable me to compare the averages of the different substrates. From this, I can determine if digestion for polysaccharides and disaccharides effects how much CO2 is produced. This is how I will present the average of CO2 production for each substrate: Graph showing the volume of CO2 produced against the time taken Average CO2 Production (cm3) Time (mins) A t- test is a statistical test that takes a look the amount of data, if there is a difference between the means of two sets of data and also the spread of the data. A t-test is relevant as I will be using a large sample of results which will consist of results from other members in m class and including mine. The formula for the t-test is: I have decided to construct a histogram for each substrate as this will allow me to compare my data easily after plotting frequency against experiments. A histogram will show if there any significant overlap between two substrates. Consequently, this can help me to make a decision of whether or not a t-test must be carried out. The below histogram would require a t-test: Glucose Maltose MODIFICATIONS I will use an inverted burette for measuring the volume of CO2 produced instead of a gas syringe. When carrying out my preliminary experiments I found that the gas syringe didnt move smoothly, therefore i was unable to accurately read how much CO2 was being produced. Therefore I will use an inverted burette which has an inaccuracy of 0.1cm3 Unfortunately, no buffer solution is available to control the pH of solution. In order to confirm that the pH hasnt changed, I will measure the pH at the start and end of each experiment. This will achieved using a universal indicator. I have changed the point at which I will take the reading. Initially I chose to take a reading jus before swirling the flask but I have now realised that this is incorrect. It would be wrong to do it this way because I want all the CO2 to escape from the flask before each reading is taken. So I will now take reading after swirling the conical flask.