DNA Definition and Structure

DNA is the acronym for deoxyribonucleic acid, usually 2-deoxy-5-ribonucleic acid. DNA is a molecular code used within cells to form proteins. DNA is considered a genetic blueprint for an organism because every cell in the body that contains DNA has these instructions, which enable the organism to grow, repair itself, and reproduce. DNA Structure A single DNA molecule is shaped as a double helix made up of two strands of nucleotides that are bonded together. Each nucleotide consists of a nitrogen base, a sugar (ribose), and a phosphate group. The same 4 nitrogen bases are used as the genetic code for every strand of DNA, no matter which organism it comes from. The bases and their symbols are  adenine (A), thymine (T), guanine (G), and cytosine (C). The bases on each strand of DNA are complementary to each other. Adenine always binds to thymine; guanine always binds to cytosine. These bases meet each other at the core of the DNA helix. The backbone of each strand is made of the deoxyribose and phosphate group of each nucleotide. The number 5 carbon of the ribose is covalently bonded to the phosphate group of the nucleotide. The phosphate group of one nucleotide binds to the number 3 carbon of the ribose of the next nucleotide. Hydrogen bonds stabilize the helix shape. The order of the nitrogenous bases has meaning, coding for amino acids that are joined together to make proteins. DNA is used as a template to make RNA through a process called transcription. The RNA uses molecular machinery called ribosomes, which use the code to make the amino acids and join them to make polypeptides and proteins. The process of making proteins from the RNA template is called translation. Discovery of DNA The  German biochemist Frederich Miescher first observed DNA in 1869, but he did not understand the function of the molecule. In 1953,  James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin described the structure of DNA and proposed how the molecule could code for heredity. While  Watson, Crick, and Wilkins received the 1962 Nobel Prize in Physiology or Medicine for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material, Franklins contribution was neglected by the Nobel Prize committee. Importance of Knowing the Genetic Code In the modern era, its possible to sequence the entire genetic code for an organism. One consequence is that differences in DNA between healthy and sick individuals can help identify a genetic basis for some diseases. Genetic testing can help identify whether a person is at risk for these diseases, while gene therapy can correct certain problems in the genetic code. Comparing the genetic code of different species helps us understand the role of genes and allows us to trace the evolution and relationships between species

Bullying Has Been A Big Problem In Our School System For

Bullying has been a big problem in our school system for many years, but it has escalated over the past decade due to the new era of modern technology. Unanimously, we can agree that our daily lives greatly depend on technologies; the internet, cellphones, computers, tablets, IPad etc. Although the uses of technology positively impacted our lives, there is also the downside when it uses have negative connotations. For instance, modern technology made it very easy to engage in cyberbullying, perpetrators used cell phones or computers to conduct this hideous behavior, hiding behind their keyboards to express negative feelings and or thoughts toward others. Using social media for senseless and unwarranted insults to intentionally cause harm†¦show more content†¦Statistics have shown that everyone can be victims of cyber bullying, but most incidents occur between the age of 11 to 15 years old, however, some report showed that children’s as young as 10 years old also been a victim of cyberbullying. Cyberbullying can have long lasting effects on its victims that can lead to mental health issues like depression, anxiety, stress, and even suicide. Increasing number of young kids and teenagers committing suicide because of cyber bullying and sexting have been coming to the public s attention. As reported by the Centers for Disease Control and Prevention (CDC), suicide is the third leading cause of death among young people with approximately 4,400 deaths every year. The CDC estimates that there are at least 100 suicide attempts for every suicide among young people. More than 14 percent of high school students has considered suicide and nearly 7 percent have attempted it, that is why, sadly, there are increasing coverages about cyberbullying case in the media now more than ever. (NOBullying, n.d.) Despite the physical contact or audible insults, cyberbullying can be even more traumatizing and damage have a life time effect on mental health than traditiona l forms of bullying. Through social media and mobile communications, bullying can now potentially be viewed by all, a victim s friends, family, andShow MoreRelatedBullying Is A Big Problem982 Words   |  4 PagesBullying Lynette Mather stated that, â€Å"What if the kid you bullied at school grew up, and turned out to be the only surgeon who could save your life?† This quote really spoke to me because it holds a lot of truth in it being that bullying or being bullied sticks with you forever whether or not you apologized for what you did back in your school days or not, those words and actions scar people forever and it is something that will remain with them for the rest of their lives. We are often blind toRead MoreBullying . In Life There Is No Perfect Picture For A Non-Violent1379 Words   |  6 Pages Bullying In life there is no perfect picture for a non-violent world, but then we turn to school, work forces and sadly enough, we as a community reach the point of having to find ways to prevent bullying. 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School systems are left unsure of how to response to the bullying while balancing legal and ethnic responsibilities. Students across the nation are being bullied online and are bringing to school the residual effects of these personal attacks The issues include traditional bullying, teen social media use and cyberbullying. The issue of cyberbullying cannot truly be addressed unless it is approached reactively. It has become increasingly evident that the Internet has broughtRead MoreAnti Bullying Essay1444 Words   |  6 PagesEnhanced Anti-Bullying Laws and School Programs Lisa Aparicio Saint Joseph’s College The Need for Enhanced Anti-Bullying Laws and School Programs Bullying was traditionally considered rites of passage, something all children and youth must go through. This is a myth. In today’s violent growing society, bullying has been responsible for several acts of non-punishable crimes. The lack of attention to implementing and enforcing anti-bullying state laws, and funding anti-bullying school programsRead MoreBullying.1393 Words   |  6 PagesThe Damaging Effects of Bullying, Why It Needs to Stop, and How to Stop It There are many problems in our school system today, but the number one problem, in my opinion, is bullying. â€Å"An Analysis of School Anti-Bullying Laws in the United States,† written by Maryellen Kueny and Perry Zirkel, states that â€Å"bullying has been a persistent problem in middle level and high schools.† According to Kueny and Zirkel’s article, â€Å"an early national study found that among sixth through twelfth graders, 56% ofRead MoreTaking a Look at Bullying624 Words   |  3 PagesBullying Bullying in schools was perceived to be a normal part of adolescent, however, when people begin to have this mentality, they forget that bullying is physically and psychologically harmful to both the bully and the victim. Bullying was known as an unfortunate cycle of adolescents and for many years have been dismissed as a passage of growing up. But not until tragic events have led to believe that bullying has a greater impact on a child’s life what first were playful jokes it has ledRead MoreHow Can We Make The School System Safe Without Bulling?1422 Words   |  6 Pagesthe school system safe without bulling? Manrique Jimenez DeVry University How can we make the school system safe without bulling? What is Bullying? â€Å"Bullying is unwanted, aggressive behavior among school aged children that involves a real or perceived power imbalance. The behavior is repeated, or has the potential to be repeated, over time† (Bullying). Bullying is a massive problem that has been occurring for years in the school systems. In most cases bullying is normallyRead MoreBullying Is The Rise Across The Nation1636 Words   |  7 PagesBullying is on the rise across the nation. According to the National Center for Educational Statistics, 30 percent of students of students were bullied during the 2010-2011 school year. Whether verbal or physical, bullying has a negative effect on the victims. Students who are bullied often experience depression, loneliness, anxiety, and isolation. The common types of bullying in a school setting are physical and verbal. With the rise in the use of social media, cyberbullying has become a big problemRead MoreEducation And Its Importance Of Educatio n1255 Words   |  6 Pagescase. Education has many issues and the three most important are the day-one problem, bullying, and high dropout rates. These issues are often a big problem and can lead to an education that does not do the United States justice. The first issue is the day one problem. This problem states the beginning of a child’s life is extremely important for a good education. (Strauss) For example, John has parents who have minimal education, never went to college, and are poor. Therefore, John has a definite disadvantage

Migration HIV and the political economy theory Free Essays

Human immunodeficiency Virus (H.I.V) is spread through; 1) Sexual intercourse with an infected individual. We will write a custom essay sample on Migration HIV and the political economy theory or any similar topic only for you Order Now 2) Use of needles or syringe for injections with an infected individual. 3) Transfusions of infected blood and blood clotting factors; Children to an infected mother may be infected before, during or after birth due to breastfeeding. (See migration HIV @) Migration is the movement of people from one locality to another. Incase one immigrant is infected there is the risk of spread of the virus. Sexual Intercourse with an infected person; When people move from one place to another they always don’t move with their sex partners. They therefore search for prostitutes or new partners to have sex with. Incase of unprotected sex, the virus will be transmitted. Many couples may not want to for H.I.V checkup so they may not be aware of their status. When these immigrants go back to their original sex partners the virus is spread again. This is normally worsened due to unfaithfulness of married couples or sex partners. Use of needles or syringe for injections with an infected person; In third world countries, needles and syringe are shared due to the unaffordable new ones. Most people don’t know their status and if they know they don’t make others aware. So the use of contaminated needles is normally unavoidable. The illiterate believe that washing needles or syringe thoroughly with hot water is good enough which is not true. Immigrants may not know where to get qualified doctors and frequent quarks that expose them to the risk. When they travel back to their motherlands the virus is spread more. This is also very common with users of Heroine and other illegal drugs. Transfusion of blood and blood clotting factors; Due to high costs of qualified doctors, Immigrants may want to look for cheap nurses without looking at the implications. Blood from donors is not screened at such clinics, this spreads the virus further. A theoretical analysis from a political-economic perspective of migration and the transmission of HIV indicates that citizens of such states can live in any part of the country without restriction in order to improve their standards of living. Due to the struggles of life people are encouraged to look for greener pastures wherever the location, an example is whereby someone is posted to another part of the country or world for work or due to a promotion. Someone may decide to start a business in a different town from his original place of residence. In Kenya, kikuyus are good in making money so they are always ready to do this in any part of the country and end up being immigrants. In Kenya there has been cases of Members of parliament being spotted at Koinange Street, a place for sex trade. Politics have made these people rich and can afford to spend on slats. Prostitues look at this as a major source of income. The city is filled with unemployed immigrants; everytime getting a job proves to be hard they result to prostitution in order to earn a living. Prostutes may be so desperate that they don’t mind having unprotected sex hence become vulnerable. The current Kenyan Government is not allowing prostitution. Streets at night are being cleared everyday and slats asked to get other sources of income. These people end up getting married and may not consider going for a HIV check up before tying the note, they therefore infect their couples. The new government should make it a law that before people get married they should go for a thorough medial check up. This law will minimize the chances of further transmissions. In Kenya; Luos and other tribes encourage wife inheritance this happens as a tradition .The new husband is always the bread winner because most widows are normally poor and cant afford to pay for their bills. In most cases the widows normally have HIV infections. Sex with new husbands/wife is normally a risk. Brothers to the deceased brother may have to move in from other areas to live with the widow or the widow may have to move to her in-law for inheritance. The new Government is also promising to stop this tradition completely. Female genital mutilation (FGM) is a deeply rooted tradition in some African communities; an example is the Gusii community in Kenya. Most of those who do the cutting consider it to be a source of income. They don’t change the knives so one cutting objects may be shared by more than twenty people. These circumcisers are illiterate and don’t understand the risk that they expose their clients to. They also consider new tools and equipment to be costly. Female Genital Mutilation is a practice that is not allowed by the Kenya (in Africa) Government so those have the tradition doesn’t looks for professional help hence exposing their clients. Lately, Members of parliament from such areas have been campaigning for the abolition of such traditions. The government should enforce the following laws: 1) One man one woman: Those with job transfers should move with their wives. This will reduce the need for prostitution and unfaithfulness. 2) Prisoners should be allowed to have intimate relationships with their wives: Due to the high levels of poverty in Africa citizens may be tempted to steal are engage in fraud activites. They therefore land in prisons were they might sexual intercourse with other women/men convicts. Prisoners should be visited by their wives at certain times and given a bed to help themselves. 3) Prostitution should be completely abolished: Prostitutes should not be arrested but should be introduced to other styles of income generation. Most prostitutes do it for the sake of money and with most rich people being their clients they might not want to quit. Salaries for Members of Parliament should be reduced and that amount redistributed to the poor through business loans. 4) Hospital/medical expenses should be made affordable: Every citizen will avoid quarks that might share needles/syringe. Gorvement’s trained medical personnel will always make sure that blood is screened before transfusion. 5) Legitimacy and illiteracy should be reduced: Citizens should be encouraged to acquire knowledge and education regarding HIV transmisission. They will therefore stop their awkward thoughts and traditions, which include; a) Female Genital Mutilation where one knife may used on more than twenty people before being washed, not even being changed. b) Marrying of daughters to rich people for the sake of dowry. c) Sharing of needles among drug users. In conclusion, migration should never be a factor contributing the transmission of HIV. People should have sex discipline all the time regardless of their newresidence. This includes: 1) Abstain 2) Be faithful to their sex partners 3) Have protected sex. Prostitutes should also be made aware of the danger they are exposing themselves and the others to besides the economic value of unprotected sex. Personal doctors should always be consulted regardless of the distance. These are the professionals that someone can trust with their treatment and cases of contaminated, blood for transfusion, needles or syringe will be reduced. 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