Compare and contrast DNA and RNA. Discuss why humans did not evolve with one central repository of DNA, but rather it is replicated throughout the body?
Deoxyribonucleic acid (DNA): It is helical double stranded nucleic acid made of complementary purine and pyramidines supported by deoxy ribose sugars and phospodiester structures. (5 Prime to 3 prime). Eukaryotic DNA material.
Ribonucleic acid (RNA): It is a single nucleic acid supported by adenine, guanine, cytosine and uracil supported by ribose sugars. mRNA, rRNA and tRNA.
Double standed RNA Viruses are also with RNA as genetic material
a) Makes a complementary strand of RNA ---------> primase
Primase is an RNA polymerase that reads DNA and synthesize complememntary RNA strand
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The four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T). A fifth pyrimidine base, called uracil (U), usually takes the place of thymine in RNA and differs from thymine by lacking a methyl group on its ring.
If we only had one central repository of DNA, it would take a long time for a protein to be made. We'd have to make it far in advance of needing it, so we wouldn't be able to quickly respond to new situations. Imagine if you were out hunting, and suddenly, a wolf appeared at your side. If you were slow at making proteins because you had one central repository of DNA, the wolf would probably get to you before you could respond safely.
Also, regulation of proteins occurs at the level of DNA as well as on other levels. In some cells, certain sections of DNA are bundled tight in a mass of proteins, in such a way that no RNA (and thus no protein) can be made from them. This turns off those genes. In other sections, only a few proteins might be keeping the DNA turned off, so that it could quickly be unravelled and used to make proteins.
This decreases the chance of harmful mutations killing the entire body, as well. Right now, you have redundancy--many copies of heart cells, each with a full set of DNA. Now imagine that something goes wrong with one of those cells. It can safely "suicide", and the other cells will replace it.
If we had one central set of DNA, if anything ever went wrong
Understanding DNA can take a lot of studying and confusion to even get the general idea of the concept. The structure of DNA is very complicated and complex to understand, but researchers James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin all developed the idea of the DNA structure in 1953. Deoxyribonucleic Acid is found in the nucleus of the cell. It is a double stranded molecule that contains the genetic code and is the main component of chromosomes. DNA is the blueprint of organisms. Nucleotides are the basic unit of DNA and they are made up of sugar, phosphate, and one of the four basis including adenine,
Discoveries in DNA, cell biology, evolution, biotechnology have been among the major achievements in biology over the past 200 years with accelerated discoveries and insights over the last 50 years. Consider the progress we have made in these areas of human knowledge. Present at least three of the discoveries you find to be most important and describe their significance to society, health, and the culture of modern life.
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.
D)Nucleic Acids monomer(s) are called nucleotide. The functional group is dna(Deoxyribonucleic acid) and rna(Ribonucleic acid). The linkage type is covalent bonds and hydrogen bonds. The primary function of nucleic acid is to store and transfer genetic material.
A and G contain 2 rings and are referred to as purines whereas C and T contain one ring and are referred to as pyrimidines. 2 of those strands combine along to make the acquainted double helix structure of DNA. the 2 strands link to every alternative via interaction between the bottom pairs in a very extremely specific method. A solely pairs with T and C solely pairs with G. This specificity, called complementary base pairing, arises via hydrogen bonds. every C-G pairing involves 3 hydrogen bonds between the bases, whereas every A-T bond involves solely 2 hydrogen bonds leading to a weaker interaction.
Structure and function in Biology is a broad concept that can be explored within a diverse range of topics across the subject matter. The following essay will be focussed mainly on the subject of Deoxyribonucleic Acid, or more commonly DNA. DNA is a highly complex, intricate and extraordinary macromolecule found within all living cells. DNA is a "biochemical noun" and can be defined as "...a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information." [Oxford Dictionary, c2016] DNA is found in the nucleus of eukaryotic cells, enclosed within a double membrane. Eukaryotic cells are multifaceted and require a high level of regulation to ensure smooth functioning. The double membrane of the nucleus allows gene expression, a key function of DNA, to be efficiently regulated.
wonder what exactly is DNA? DNA is a term used for deoxyribonucleic acid and it
DNA also known as deoxyribonucleic acid is a complex molecule that carries the genetic information in the cell, essential to build and maintain an organism.
DNA is important to organisms because DNA carries hereditary information on to the next generation of cells during the process of replication. This is important for the health of an organism because when a cell divides because it becomes too large; it needs a copy of the genetic information in order to fulfill necessary processes in order to keep the organism alive.
DNA is a long curved structure, made up of pairs of four specific bases: adenine, guanine, cytosine, and thymine, is the repository of a code from which all of our cells are made. The code is made up of base pairs which look like the rungs of a ladder, and are joined by alternating phosphate and sugar groups, which may be compared to the ladder 's sides or legs. The bases adenine and thymine form what is known as one base pair, and the bases cytosine and guanine form the second base pair.
Deoxyribose is important in DNA because there is a lack of oxygen within it, which prevents the molecules from getting involved in chemical reactions, and helps avoid the DNA from being broken down. Because DNA is meant for long term use, it is a necessity that it has a strong base that prevents it from being decayed (Biology Stack Exchange, 2016). The outer part of DNA that keeps it all together is a called the backbone, which is composed of alternating sugar and phosphate molecules. This sugar-phosphate backbone is what creates the double-helix shape formed by two linear backbones that run opposite of each other (Scitable By Nature Education, 2017). The sugar is located in between one of the nitrogenous bases, and a phosphate molecule. The phosphate and the sugar in the structure are important because they provide a lot of support in the backbone, and help complete the DNA strand.
DNA is a long curved structure, made up of pairs of four specific bases: adenine, guanine, cytosine, and thymine, is the repository of a code from which all of our cells are made. The code is made up of base pairs which look like the
Deoxyribonucleic (DNA) is the molecule that hold the genetic information of living things. In our body every cell contains about 2 meters of DNA. DNA is copied every time a cell divides. Deoxyribonucleic (DNA) is made up of two polynucleotide strands. Polynucleotide strands twist around each other, forming a shape that looks like a ladder called a double helix. The two polynucleotide strands run antiaparallel to each other with nitrogenous bases this means that the stands run in opposite directions, parallel to one another. The DNA molecule consists of two backbones chains of sugars and phosphate groups. The organic bases held together by hydrogen bonds. Although bases bonded together are termed paired
Due to the DNA’s specificity, samples can be utilised for identification. DNA is a nucleic acid composed of deoxyribose sugar bound to a phosphate group and one of four nitrogenous bases (adenine, guanine, cytosine and thymine). Each section of these three components are referred to as nucleotides, which are joined to the phosphate or sugar of another nucleotide by strong covalent bonds to form a backbone. The nitrogenous bases are joined to complimentary bases of another nucleotide (adenine with thymine, guanine with cytosine) to create a double stranded molecule (Figure 2). To complete the double helical structure, the molecule coils to compact it’s contents. DNA molecules can contain up to two million base pairs, with a human genome containing approximately 3 million base pairs. The random assortment of nitrogenous bases as well as the numerous mutations within certain DNA sequences, results in genetically diverese DNA molecules and genomes between individials.