B1 Corn as GMO Essay Example | Topics and Well Written Essays - 1000 words

B1 Corn as GMO - Essay Example This cDNA strand is then isolated and cloned or duplicated for the purpose of transformation into another species and this transformation process is made possible with the help of the bacterium known as Agrobacterium tumefaciens (Peel, 2001). This particular bacterium infects specific woody dicotyledonous plant species, where certain parts of the Agrobacterium circular DNA known as Ti plasmid can insert themselves into the host plant’s cell (Peel, 2001). The host plant, which is the corn plant in this particular experiment, then expresses the Bt gene (Peel, 2001). If this particular transformation process is not opted for, then the gene gun can be utilized. The other transformation process is the use of gold particles and coating them with target genes, such as Bt genes in our example (Peel, 2001). Using a gene gun, the genes are shot into the single cells of the corn plant without the help of the Agrobacterium in a process known as particle acceleration (Peel, 2001). Now that the Bt genes are already incorporated into the corn plant, a series of tests should confirm the potency of the bacterial gene. Plant tissue culture is the next step. Individual cells of the corn plant are obtained for culture and are subjected to the transformation process, which basically involves the elimination of non-transformed cells using a method that involves the use of selectable marker genes (Peel, 2001). The cultured corn plant cells are then treated with herbicide or antibiotic, and whole corn plants called Bt corn plants are then grown from the seeds of those cultured cells that eventually survive (Peel, 2001). If the Bt corn plant expresses the trait even after several generations using laboratory techniques, then it is believed to be stable and can now be bred using conventional agricultural methods and the final test would be for it to be able to stand environmental conditions (Peel, 2001). The process of transformation of the corn gene into the Bt corn gene involve s a crucial intermediate step where, before the Bt gene is inserted into the corn plant, it is first modified with promoters that would later on be recognized by the corn plant itself (Peel, 2001). This step and particularly these promoters is most crucial to the development of the toxic properties of the Bt corn plant. Because of these promoters, Bt corn â€Å"encodes crystalline proteins from the bacteria that are responsible for larvae toxicity† (Peel, 2001). Upon the Bt corn being eaten, these crystalline proteins, or Cry proteins, will bind to the insect’s midgut and cause a water imbalance that will eventually burst the cells and kill the pest (Peel, 2001). There are currently two types of promoters used in developing the Bt corn plant – the CaMV35S promoter and the PEP carboxylase promoter. The former expresses the toxicity of the Cry proteins in all plant tissues including the photosynthetic parts as well as the ears, roots and tassels, thus killing all insects that subsist on any part of the plant (Peel, 2001). On the other hand, the PEP carboxylase promoter, due to its exclusive affinity to cells that actively manufacture photosynthetic proteins, expresses the toxic properties of the crystalline proteins only in the photosyntheti

The Ageing population Research Paper Example | Topics and Well Written Essays - 1250 words

The Ageing population - Research Paper Example The study of ageing population has been important to policy makers because of its implications to the burden of the retirement system, health care provisions and caring for this population Life expectancy can also be a measure of a potential return on investment in human capital and is necessary for the calculation of various actuarial measures. Review of literature Are there really some reasons why some people age faster than others? According to researches and studies, there are really factors that lead to early ageing of populations and some of these have impact on socio economic and health consequences. In the reports of Gosh, 2011, Homeschooling website 2011, BBC News 2011, and Reuters 2011, there is evidence that people with lower education are prone to age more quickly than those with higher education. This evidence points to the researchers from Britain and the United States that examined the length of sections of DNA telomers of 450 people who took part in a long term health y study. Findings of the study showed people who did less well at school had shorter telemores suggesting they may age faster. Stibich (2009) defines telemores â€Å"as bits of â€Å"junk DNA† at the end of chromosomes that protect your real DNA every time a cell divides. What happens is that, due to how cells divide, the very last bit of a chromosome can’t be copied 100% - a little bit gets cut off. It was thought that, as cell divide, the telomeres get shorter each time, until they are gone. At that point, the â€Å"real DNA† cannot be copied anymore and the cell simply ages and no longer replicates†. Further research showed chronic HIV infection speeds up aging by as much as 20 to 30 years (Rickabaugh et al. 2011) According to WHO, the risk of HIV infliction in South Africa, shortens the lives of people wherein 10% of its population with ages 50-54 are living with HIV. On this, study of Pebody (2009) on life expectancy of people with AIDS in US is redu ced by 21 years. Comparing this with black and white’s life expectancy of those diagnosed with HIV, study showed white men have higher years of 25.5 years than black men of 19.9 years and Hispanics with 22.6 years. However, these figures showed an improvement and an increased over the 1969 figures which are relatively shorter. The socio economic consequences are some of the reasons for early ageing as seen in the report of Park of CNN (2011) that said baby boomers are aging faster than previous generations. Park posed the observations that senior population are less healthy and heavier than their parents were at their age; boomers think of themselves as young, but they’re aging physiologically faster, and more often, they are bothered with stress, obesity, health care, brain function and arthritis Methodology The study will use exploratory research in order to discover general information on the ageing population. When the goal of a study is to gain an insight to a par ticular topic or situation, an exploratory research is an appropriate design for the study (KnowThis.com). This approach has been selected because the research is new and it is hard to pinpoint the research direction. So in using this, result of study may be used for a more formal research direction. Data collection will be gathered from secondary sources of published articles and studies. Discussions A comparison of life expectancy in selected countries is presented in Table 1 to show differences among developed, emerging and third world countries. Table 1. Demographic comparison, by country 2011 Country POPULATION AGE STRUCTRE65 Yrs & above FERT.

Learning assessment Essay Example | Topics and Well Written Essays - 1750 words

Learning assessment - Essay Example In this regard the most basic elements of procedural writing should be taught to the students. Writing is an art that is noted as one of the most used expression of the human civilization. It could then be observed that through the numerous written works of different authors of books, of paper articles and other readable materials alike, there is a certain pattern that they follow. Why is it important to make effective use of these procedures' A.L. Trupe says that "Effective intervention results in better papers. Students who are asked or required to spend more time on a paper will think more about their topic, retain more information, and develop more powerful insights" (2001, Internet).Not everyone might easily see this obvious presentation of thoughts in a fine pattern. However, as it has always been said everybody and everything starts with the basics. Through this particular discussion, there are numerous factors that would be considered to be able to identify the essential proc edures that even expert or professional writers take into consideration when they are putting their thoughts into writing. When writingWhen writing a paper, or in this case a letter, there are at least three major preliminary procedures that should be considered by the writer. These procedures are called the "primary procedures". The said procedures include: (a) Prewriting Prewriting is the process by which a writer tends to scribble the words in his or her mind on paper. The words may mean nothing yet as they are all serving as key words to the main thoughts of the writer. From this so-called "scribbles" of thoughts, the writer is then able to create a plan on what he or she would more likely focus on in his writing. (b) Planning From the "scribbles" comes along the plan of the plot of the idea that is to be presented by the writer in writing. The ways by which the writer wants to layout the topic is done through outlining the primary topics of concern that needs to be addressed within the context of whatever it is that is being written about. Most often than not, this particular stage of writing makes it easier for the writer to see what the expected result of the written article or composition would actually look like. (c) Drafting From the outline comes the first-hand draft of the paper. The paper's draft looks like the actual approach of the writing, only that it is a much more basic type. It is a type of the composition that requires refurnishing. Meaning there are a lot of points that still needs to be redone in this particular step in writing. The writer is much freer when it comes

The audacity of love Essay Example | Topics and Well Written Essays - 1000 words

The audacity of love - Essay Example ise and Jerome Robbins is an exquisite blend of entertainment and education that opens a new vista pertaining to the class difference and class consciousness. â€Å"West Side Story† is an American film based on the eternal romantic play by Shakespeare, â€Å"Romeo and Juliet† and adapted from the Broadway Musical bearing the same title. But these facts do not make this film powerful. The combination and the balanced blend of countless elements generate a powerful impact on my mind. The urban retelling of â€Å"Romeo and Juliet† set against the background of the streets of Manhattan during the late summer of 1957 revolves round the story of love between two youngsters from opponent camps related to NYC gang and their consequence. The death of Tony in the arms of Maria which reaffirms their love â€Å"Somewhere† indicates that the film shows that despite of having every scope and possibility for the lovers to be one, they fail to achieve that state due to class differences and social rivalries. The beginning of the film shows the passionate love of Tony and Maria and their slow paced development of passion and desire for one another helps to make me feel their passion and overflowing emotions equally. In other words, the film makes me fall in love with the love story of Maria and Tony, woven within the plot of the film. Naturally at the end of the film the tragic consequences of the lovers give out a strong emotional impact and a long-lasting impre ssion on my mind and anyone watching the film would also come to the same point that social rivalry leads the generations and the world nowhere. Also the urban setting and re-telling of the film enables the contemporary mind to relate with it strongly. â€Å"The Graduate† directed by Mike Nichols is an American comedy-drama that was released in the year 1967. The plot of the film â€Å"The Graduate â€Å" combines an extra-ordinary and enchanting love story between its main characters, Benjamin Braddock played by the Academy Award

Dissertation Introduction - Taobao vs eBay Essay

Dissertation Introduction - Taobao vs eBay - Essay Example In terms of outline, this chapter will then offer a Background and rationale for the study, which is based upon existing work in the area. Several studies have recently been made of the eBay and Taobao phenomena, and the results documented. These will be used as a springboard towards the contribution of this study. The Aims and Objectives section of the chapter will offer the overall objective of the study. The aim is to scrutinize the current situation of eBay in China, and how a comparison with the more successful Taobao can be used in order to improve its situation. This section will also clarify the concepts of e-Commerce and C2C e-Commerce. The e-Commerce business model that eBay is currently using in China will also be evaluated. A comparative analysis will be performed of eBay and Taobao. Initial recommendations will be formulated in order to optimize eBay’s Chinese market presence, while the objectives identified will be related to the achievement of the overall aim. T he methodological framework will be explained, while the chapter concludes with a brief outline of the dissertation structure. Despite a promising beginning, eBay has been experiencing a recent drop in growth in its Chinese market. Its main competitor in this market is the local company, Taobao. This study is then conducted in order to identify possible ways in which eBay can remedy its market position in China. Several important studies have been conducted to compare Taobao with companies such as eBay in order to identify the success factors of the former. One such study has been conducted by Chen et al. (2007). According to the outcome of this investigation, three main factors have differentiated Taobao from its American counterpart, and been responsible for the success of the former. The first factor is that China’s C2C (consumer to consumer) market is young and experience-seeking. The customers are price sensitive, in concomitance

Jazz History George Gershwin Essay Example | Topics and Well Written Essays - 750 words

Jazz History George Gershwin - Essay Example He started his musical training at the age of 13, and was so enthusiastic about it that he dropped out of the school at the age of 15 to work at Tin Pan Alley, a music publishing firm owned by Jerome H. Remick. "Since I found you" and "Raggin' the Traumeri" were the first two songs that George tried to publish but wasn't so lucky. Later on, he was able to get his song "When you want 'em you can't get 'em when you've got 'em you can't get 'em" published but wasn't able to make much impression on the public. First real fame came to him when Al Jolson popularized his song "Swanee" in 1919. Another notable success for him was in 1920, when he was hired to write music for "Scandals". Eventually, George and his elder brother Ira, together, were one of the dominant songwriters of the Broadway. His works such as, Oh, Kay! (1926), Funny Face (1927), Strike Up the Band (1927 & 30), Girl Crazy (1930) and Of Thee I Sing (1931) are one of the few that are worth mentioning. But his most outstanding work was "Rhapsody in Blue" for Paul Whitman Orchestra which opened a new era in the music by bringing Jazz into mainstream music and established it as a credible music genre. Later on he composed "Concerto in F" for New York Symphony Society, which is also considered one of his wonderful works amongst others such as "An American in Paris" and "Second Rhapsody". One of the interesting works he did was folk opera by the name of "Peggy and Bess" along with co-writers, Ira Greshwin, DuBose and Dorothy Heyward, which made its way to Broadway on 10th October, 1935. Disaster struck in July, 1937. George was admitted to Cedars of Lebanon Hospital where he was diagnosed with a brain tumor and was operated. He could not survive and was pronounced dead on 11th July, 1937. His last song "Love is here to stay", is here to stay in the hearts of every one who knew him. In conclusion, Gershwin has always been inspired with the classical European music and he elegantly combined it with something that originated in the gatherings of the African-American communities and managed to bring it into opera houses and Broadway while at the same time inspiring many others. Few of them such as Frank Sinatra, Nina Simone, Bing Crosby and Sting have recorded many of his songs. Many musicians like Ella Fitzgerald, Louis Armstrong, Miles Davis and many more have admired his work by depicting it in their work. In an article by John Rockwell in New York Times, 1987, praises Gershwin by citing Paul Simon's example as how this folk-rock artist carries forward the legacy of the great legend in his work "Graceland". Furthermore, in the same article he says, "If Gershwin didn't push the boundaries of classical music forward in his concert pieces(sic), he at least aspired to transcend the song forms and the limited harmonic language he started with. And that is something that today's ambitious pop art-song composers like Mr. Simon, David Byrne, Stevie Wonder and even Bruce Springsteen could profitably learn from him." In 2007, Library of Congress created Greshwin Prize in the memory of Gershwin brothers, for the artists with lifetime contribution to popular music. So far Paul McCartney (2009), Stevie Wonder (2008) and Paul Simon (2007) have been the three recipients. Works Cited "George Gershwin." The Official Website of George and Ira Gershwin. 2007. Web. 23 Nov, 2010.

Martin Luther King vs. Malcom X Debate Essay Example | Topics and Well Written Essays - 500 words

Martin Luther King vs. Malcom X Debate - Essay Example Finally, the paper will take a neutral stance based on their arguments. Arguably, there is noticeable indifference in Martin’s way of leadership especially in cases where he talked about Civil Rights. In his quest for Equal rights to all people, Martin deliberated for a non-violent protest, passive resistance, and use of what he termed as the â€Å"Weapons of love†. With reference to these protesting means, it is seeable that Martin’s fight for Civil Rights involved simple and friendly methods. On the other end, Malcolm X was a great leader, but unfortunately, his means of fighting for Civil Rights were rather outrageous than those of Martin Luther King. At some point, analysts point out that Malcolm X was suspicious of the whites and was ready to apply â€Å"any methods necessary† in order to achieve equality (Keith and Anissa 48). Additionally, the debate between these two great leaders is very substantial as it gives the best understanding of weapons used by leaders during activism. The video of King and Malcolm shows that , as long as he strove to achieve what he felt best for his people, Malcolm was a segregationist up until his renowned pilgrimage to Mecca since he was a Muslim. In the video, Martin’s reasoning was rather rationale unlike that of X whose arguments depicted uncertainty in various occasions. For instance, before his highly spoken departure to Mecca, X’s attitude towards racial discrimination against blacks depicted rather uneven correspondence with that Martin. As such, his Black Muslim brothers, under the royalty of Elijah Mohammed, revolted and started viewing X as a threat to the Black Muslim Movement. Specifically, the debate between Martin and X shown profound disagreements with regard to the arguments, reasoning and quotes brought about by both leaders. In the case of Martin, struggle for