Dna vs. Rna Essay

440 WordsMar 6, 20142 Pages
After comparing DNA and RNA, I notice that the main difference between DNA and RNA is the sugar present in the molecules. The sugar in a RNA molecule is known as ribose and the sugar present in a molecule of DNA is known as a deoxyribose. Deoxyribose sugar in DNA is less reactive because of its C-H bonds. It is stable in alkaline conditions. DNA has smaller grooves, which makes it harder for enzymes to attack the DNA. DNA is a self-replicating nucleic acid. RNA has larger grooves that make it easier for enzymes to attack. DNA is a nucleic acid that contains the genetic instructions used in the development and functioning of all modern living organisms. RNA is a single-stranded chain of alternating phosphate and ribose units with the bases Adenine, Guanine, Cytosine, and Uracil bonded to the ribose. RNA molecules are involved in protein synthesis and sometimes in the transmission of genetic information. RNA is synthesized from DNA when needed. Both of them are nucleic acids. And that is about the only similarity they share. DNA contains the nucleotide T whereas RNA contains U. RNA copies the genetic information found within DNA and uses it to assemble protein, as well as ribosomes. Therefore, RNA is a critical part in protein synthesis. It is directly involved in it, but DNA is indirectly involved in this process. Ribose sugar is more reactive since of its C-OH (hydroxyl) bonds. DNA and RNA both carry bases. In DNA these are known as adenine, thymine, cytosine and guanine. In RNA thymine is not used, and uracil is used in its place. DNA is a way of storing the information about all of the proteins in your body. Proteins are made up of chains of amino acids, so lots of codons make up genes which code for lots of amino acids in a particular sequence that make up your protein. Humans do not evolve with one central repository of

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