Essays on Strands

Introduction

The Ebola virus has existed for centuries. Like all life forms and viruses, it has been changing and adapting since the beginning of time to survive. Despite this the disease did not make itself known until the twentieth century. However, once the virus revealed itself only three major outbreaks have occurred. There were two in 1976 and one which took started in 2014 (CDC, 2015). The latest outbreak has been the longest and worst, effecting numerous countries such as, Mali, Nigeria, Liberia and Senegal in West Africa (CDC, 2015). This paper will look at the scientific aspects of the ...

Final Test

Explain in general terms the process of DNA replication. The replication of the DNA starts when the double helix unwinds. Each of the two strands serves as the template using which the new DNA double helix strands are formed. The different bases on each of the two strands are then matched in order to form a new set of two strands. Each of the new strands partners with the parent strand to form a double helix (Roth 26).

Prophase – Chromatids are joined at the centromere. Spindle formation occurs. The separation of centrioles occurs in animal cells (Tobin and Jennie ...

Question 1

DNA replication can be defined as the process by which during cell division the DNA duplicates itself to several copies. In this process, the first step involves the unzipping of the double helix found in the DNA structure. This is done by the helicase enzyme, which breaks hydrogen bonds holding the DNA together. When separated the two DNA strands form a replication fork with a Y shape (Craig et al. 2014). This causes the strands to be oriented in different directions, forming the leading and the lagging strands. Once the two orientations are formed, a short RNA piece called ...

1. Explain in general terms the process of DNA replication. DNA replication refers to the process whereby DNA makes its own copy during the process of cell division. During this process, the DNA strands unzip themselves since helicase enzyme breaks the hydrogen bonds between the complementary strands. As this occurs, a replication fork is created. Each individual strand (leading and lagging) will be used as templates. A primer attaches itself to the leading strand and the synthesis of DNA begins, whereby DNA polymerase adds nucleotides to the synthesized strand. This is a continuous process and occurs in 5’ to ...

Questions and Answers

For each of the following sequences, fill in either the DNA (template strand), the mRNA sequence, the tRNA anticodons, or the amino acid sequences that have been left blank. If several sequences might work, choose any one. Start translation with the first codon for each line (don’t worry about an AUG) DNA T A C T G A T C G A C C C C C A T A A T G A A A A T C tRNA U A C U G A U C G A C C C C C A U A ...

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Introduction

Polymerase Chain Reaction (PCR) is a very influential technique that helps in amplifying the specific segments of DNA. This biochemical procedure is performed in-vitro that is quite different from cloning. This technique is a fusion of synthesis protocol of distinct repeated segments of DNA and thermostable DNA polymerase application that has given scientists a very potent analytical, immunological and molecular technique used prevalently in clinical laboratory science (Garibyan & Avashia, 2013). PCR is based on three primary steps that include denaturation of the template into single strands, annealing ...

An analysis of how the criminalist in Ted’s case handled the evidence and whether it was positively or negatively involved in the outcome of the case Voelker & RDH (2012) proclaims that the investigators obliged that Bundy to offer a dental impression to aid in the investigation but Bundy refused. After sometimes, the criminalists were granted a search warrant to get the impression in any possible tactic. A disclosure trip was orchestrated to hinder Bundy from grinding his teeth to hide his bite. The initial scar was photographed and a clear overlay created. Voelker & RDH (2012) addresses that the ...

Biology

(Department)

DNA and its importance in our lives

Introduction Deoxyribonucleic acid (DNA) is a long linear polymer located in the nucleus of a cell. It is developed from nucleotides and shaped like a double helix. It is related to the transmission of hereditary information from one generation to the second generation. DNA contains the information for the development as well as reproduction of an organism, thereby leading to a normal life. In the year 1953, James Watson, a biologist, and Francis Crick, a physicist, discovered the structure of DNA in a laboratory in England (LEROY, 2003). The structure of DNA helped scientists to know the process ...