DNA Essay example - 1427 Words

DNA is a term that has been used in science as well as in many parts of daily life. The general public knows that DNA is a part of our bodies but they may wonder what exactly is DNA? DNA is a term used for deoxyribonucleic acid and it is the genetic material of all organisms, it is the molecule of life and it determines all of our physical characteristics. DNA is present in every single form of life. More than 50 years after the science of genetics was established and the patterns of inheritance were clarified, the largest questions remained unanswered: How are the chromosomes and their genes copied exactly from cell to cell, and how do they direct the structure and behavior of living things? Two American geneticists, George†¦show more content†¦Ã¢â‚¬Å"To make a new, identical copy of the DNA molecule, the two strands unwind and separate at the bases which are weakly bound; with more nucleotides available in the cell, new complementary bases can link with each separated strand, and two double helixes result.† (Caldwell) Since the â€Å"backbone† of every chromosome is a single long, double-stranded molecule of DNA, the production of two identical double helixes will result in the production of two identical chromosomes. The DNA backbone is actually longer than the chromosome but is tightly coiled up within it. This packing is now known to be based on minute particles of protein known as nucleosomes, that can only be seen under the most powerful electron microscope. The DNA is wound around each nucleosome to form a beaded structure. The structure is then further folded so that the beads associate in regular coils. Thus, the DNA has a â€Å"coiled-coil† configuration. After the discoveries of Watson and Crick, the question that remained was how the DNA directs the formation of proteins, compounds central to all the processes of life. Proteins are not only the major components of most cell structures, they also control virtually all the chemical reactions that occur in living matter. The ability of a protein to act as part of a structure, or as an enzyme affecting the rate of a particular chemical reaction, depends on its molecular shape. This shape, in turn,Show MoreRelatedDna Analysis On Dna And Dna1535 Words   |  7 PagesIntroduction DNA stands for deoxyribonucleic acid. DNA is the genetic material of life and is made up of monomers called nucleotides. Nucleotides are monomers made up of a phosphate group, a sugar, and a nitrogenous base. (Freeman, 2014) The way that DNA is able to store information is in its nitrogenous bases. There are four different types of nitrogenous bases that DNA strands contain: adenine (A), guanine (G), cytosine (C), thymine (T). These nitrogenous bases in DNA are each different,Read MoreDNA Adaptation In DNA1746 Words   |  7 Pageshuman body operates is due purely to one’s genetic disposition. This is due to the way proteins are produced. In protein production, DNA is read three base pairs at a time making up for a codon which codes for a specific amino acid. These amino acids are produced in translation, and they will be strung together by something called tRNA to make full proteins. In DNA replication, there are many factors that determine the efficiency and effectiv eness of what product is achieved and how it functionsRead MoreDn Dna And Dna1128 Words   |  5 PagesQuestion 1 To clone complementary DNA (cDNA), it is necessary to obtain a library including the sequence of interest. Then the clones that are of interest are isolated and tested to ensure they are the right clones. cDNA is then synthesized through reverse transcription by the reverse transcriptase enzyme which yields a complementary DNA from the RNA. The cDNA is incorporated into a vector to allow for manipulation. Screening is then done using cultures such as E.coli bacterial lawns. The cDNA isRead MoreDna Analysis : Dna And Dna2142 Words   |  9 Pages DNA polymerases are vital in how an organism can sustain life. DNA polymerases are enzymes that synthesize DNA molecules from deoxyribonucleotides and are accountable for DNA replication. They are absolutely critical for DNA replication and will typically work in sets so that they can create two identical sets of DNA strands from one single strand of DNA. DNA polymerase will catalyze the reaction: deoxynucleoside triphosphate + DNAn diphosphate + DNAn+1. DNA polymerases are extremely importantRead MoreDna And Sequence Of Dna Essay1609 Words   |  7 Pages DNA (deoxyribonucleic acid) is a self-replicating nucleic acid that carries the genetic information in cells in a double helix structure. The 2 stranded helix is composed of 4 nucleotides, Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). The base pairs only form between A and T connected by 2 Hydrogen bonds and G and C connected by 3 hydrogen bonds. Foremost DNA wrapping comes about as DNA wraps around protein called histones. These combined loops of DNA and protein are called nucleosomesRead MoreDna, Evidence, And Dna Evidence997 Words   |  4 Pagestestimony, documentary evidence, real evidence, exculpatory evidence, inculpatory evidence, demonstrative evidence, and DNA evidence. However, the piece of evidence I will choose to talk about is DNA evidence which is also known as DNA profiling. This piece of evidence changed the landscape of the justice system when it was first introduced 1986 by Professor Alec Jeffreys; he developed DNA fingerprinting techniques to link two rapes/murders to a perpetrator named Colin Pitchfork while exonerating an innocentRead MoreDna And Ethics Of Recombinant Dna1601 Words   |  7 Pages Recombinant DNA and Ethics Brooke Boland BIO/410 - Genetics October 23, 2017 Miranda Gauthier Recombinant DNA and Ethics Recombinant DNA technology has become a powerful influence to many fields including medicine, pharmaceuticals and agriculture. Genetic modifications of plants, animals and other organisms have allowed scientists to improve the quality of human life. As genetic engineering continues to rapidly grow, many ethical, social and legal issues arise evaluating the risksRead MoreDna Analysis : Strawberry Dna Extraction1685 Words   |  7 Pages Strawberry DNA Extraction Sara Awad 795149 Read MoreDna Damage, Repair, And Dna Methylation Essay1263 Words   |  6 Pagesdamaged DNA seems to be an understudied subject, there is much to understand on the restoration of DNA damage, repair and DNA methylation. Genomic DNA can be modified by methylation but much of it is affected on a gene when silenced. When epigenetic modification has been implicated with cancer and aging it causes DNA methylation to also have an impact on the double strand of DNA analysis. Modification as such provoke deteriorating changes like aging found in multicellular organisms and DNA damageRead MoreDna Essay778 Words   |  4 PagesAbstract This paper explores the history and some interesting facts about DNA. The last couple centuries have seen an exponential growth in our knowledge of DNA. The history of the DNA can be traced back to multiple devoted scientist. This article attempts to summarize, and review the basic history of DNA while providing some fascinating information about it. A Brief Historic Review Throughout the early 19th and 20th century, many scientists have studied deoxyribonucleic acids in

Naturalistic Observation Of Student s A Coffee Line

Naturalistic Observation of Student’s in a Coffee Line In the United States, 85% of adults own a cell phone, with 18 to 24 year olds texting the most (Zickuhr, 2011). Of these adults, 67% reported that they check their phone even if they do not hear it ringing, 44% sleep with the phone beside their bed, and 29% reported they could not live without their cell phone (Smith, 2012). In addition, according to the Baylor University report, studies show that young adults check their phone an average of 60 times a day. This study examined cell phone use among university students that were alone and in a group. Specifically, we were interested in observing whether students alone in a coffee line or students in a group in a coffee line, spent more or less time on their cell phone. We were also interested to observe if gender affected cell phone usage and whether males or females were more likely to be in a group. The purpose of this study was to determine if university students that are alone spend more or less time on their phone than students that are in a group. We also examined if gender was an important factor on whether a student was in a group or alone. Using naturalistic observation, we calculated the amount of time individual students were on their phone per three minute time interval. The hypothesis was that students alone in a coffee line would spend the most time on their phone. We also predicted that women were more likely than men to be in a group. MethodShow MoreRelatedSocial Medias Negative Influences on Social Interaction Essay examples6703 Words   |  27 PagesConclusion†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦23 References†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..†¦.25 Abstract The purpose of this paper is to observe complete strangers and familiar groups of people in a coffee shop setting, and a college setting, and document the use of social media and their interactions with other people. The goal of these observations is to see how much people socially interact with one another, and how much time people seclude themselves through the use of social media. The observer will also record the numberRead MoreMarketing Research and Information Systems47836 Words   |  192 Pagesrisks. Marketing research is charged with helping to reduce such uncertainties, ...but will never remove it. At best, marketing research will increase the probability that the decisions which management has to take will help attain the organisation s marketing objectives. Chapter Objectives The objectives of this chapter are to: †¢ Define the role of marketing research in decision making †¢ Outline the contents of a research brief †¢ Outline the contents of a research proposal, and †¢ Explain inRead MoreThe Effects of Advertising on Children33281 Words   |  134 PagesThis report was prepared by the Bond University Centre for New Media Research and Education between August and November 2006. The research team was Dr Jeffrey E. Brand (Director), Dr Mark Bahr (Psychology), Ms Jill Borchard and Ms Tanya Neves, (PhD students at the Centre). This research was conducted by independent researchers and the conclusions do not necessarily reflect the views of ACMA. Australian Communications and Media Authority 3 Television Advertising to Children Executive summary Read MoreStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 Pagesand permission should be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. To obtain permission(s) to use material from this work, please submit a written request to Pearson Education, Inc., Permissions Department, One Lake Street, Upper Saddle River, New Jersey 07458, or you may fax your request to 201-236-3290. Many of the designations by manufacturersRead MoreOrganisational Theory230255 Words   |  922 Pagessterling service in bringing together the very diverse strands of work that today qualify as constituting the subject of organisational theory. Whilst their writing is accessible and engaging, their approach is scholarly and serious. It is so easy for students ( and indeed others who should know better) to trivialize this very problematic and challenging subject. This is not the case with the present book. This is a book that deserves to achieve a wide readership. Professor Stephen Ackroyd, Lancaster UniversityRead MoreOrganisational Behavioure23151 Words   |  93 Pagesand moods to OB issues. 3 4 Describe external constraints on emotions. LEARNING 258 OBJECTIVES ROBBMC08.QXD.0132431521 12/15/05 12:25 PM Page 259 CHAPTER 8 Emotions Can Be Powerful teve Wynn, the famous hotel S on the grounds of his flagship hotel and mogul, is an emotional person.1 casino, The Mirage. At the same time, He is known for his infectious while Wynn was in charge of the enthusiasm, as well as his temper. He once Mirage, it was

Teacher’s Pay for Performance Free Essays

Should Teacher’s Salaries Be Based on Student’s Academic Performance? Is a student’s failure in a class an indication that a teacher or professor did not adequately perform his or her job? There are two points of view on this issue. Many will argue that teachers should be paid on a merit system, or Pay for Performance system. There are some that believe that there are too many external factors in a class room for a teacher’s salary to be based on how he or she performs in the class room. We will write a custom essay sample on Teacher’s Pay for Performance or any similar topic only for you Order Now Teacher’s pay for performance will be highlighted by first discussing what is pay for performance, next, detailing the definition of teaching, and finally, exploring the question of should teacher’s salaries be based on a student’s academic performance. Pay for performance is essentially when an employee is allowed to be partly responsible for his or her pay increase. A company will set goals as well as allow the employee to set his or her own goals and if the employee meets those goals, he or she will get a raise. These raises are based on levels of performance ranging from one to five. A level of one means that an employee failed to meet his or her expectations. A level of two means that an employee needs improvements in some areas. A of three means that an employee met his or her expectations. A level of four means that an employee exceeded his or her expectations. A level of five means that the employee far exceeded his or her expectations or as some managers imply, he or she is a â€Å"super employee†. Pay for performance is designed to inspire employees to work harder so they can obtain higher raises and bonuses if they reach a certain level. Employees may also be motivated to perform better the next year. The question remains, should teachers be on this type of merit system? Teaching is conveying knowledge in formal learning institutions, whether it is a school, K-12, or a university or college. Teachers have a major influence on a student’s life. They plant seeds of knowledge that continue to grow with a student. They support, empower, engage and care for their students. Today, most teachers are paid based on their seniority or academic degrees. Perhaps they should be paid based on their level of accomplishment and responsibility. Teacher evaluations should be based partly on student achievement data and their raises should be based on student’s academic performance. If teachers were paid based on student’s academic achievements, they would put forth more effort to provide a higher quality of teaching. Competition would be raised among teachers and a possibility of higher salaries would encourage them to perform better. If teachers were paid for their performance it might also differentiate teachers who care about their student’s performance from those who only want to collect a paycheck. On the other side of the coin, there are also reasons why a teacher’s salary should not be based on student’s academic performance. The first being that there is a lack of standard academic performance tests, which means there is no measurement criteria. There is the possibility that some teachers might give students higher grades to benefit their salaries. The strongest argument against teacher pay for performance would be that all students do not have the same level of intelligence, commitment, or determination. It may not be fair to hold a teacher responsible for a student that cannot learn or do not want to learn. Given the scenario that a teacher’s pay increases would be based on student’s academic performance, their levels of performance could range from one to five also. A level five would indicate that all students have passed the class with a grade of B or better and performed well on a standardized test. A level four would indicate that all students passed the class with a grade of C or better. A level three would indicate that 80 percent of the students passed the class. A level two would indicate that at least 50 percent of the students passed the class. A level one would indicate that only 20 percent of the students passed the class or a student has failed the class more than once under the same teacher. Teachers that perform at level one should not receive pay increases. A performance level of three or above should receive salary increases. An example of a level one performance would be if a student failed the same class two or more times or if only four out of twenty students passed a class, then that teacher or professor obviously has not imparted the knowledge to their students that they set out to convey. An example of a level three teacher’s performance would be if his or her students continuously increase their academic performance or pass standardize tests. In conclusion, I assert that teacher’s salaries should be based on their student’s academic performances. If teachers hit their levels, they should receive higher raises. It they fail their students, their salary should not increase. There are a lot of educators that would disagree with this assertion; however, given the state of our education system, a change needs to be put in place. If teachers are required to perform better and are paid better based on their performance, then students will perform better. How to cite Teacher’s Pay for Performance, Essay examples