Essay Dna Acid And Ribonucleic Acid

714 Words Dec 2nd, 2015 3 Pages
Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) make up the nucleic acid in cells and is responsible for the differences in many of our traits. DNA is the substance in which our genetic material is carried on from one generation to the next. Nucleotides join together through phosphodiester linkages between the 5 ' and 3 ' carbon atoms to form nucleic acids. “Nucleotides are composed of a five-membered sugar group with a purine or pyrimidine nitrogen base group attached to its 1 ' carbon via a glycosidic bond and one or more phosphate groups attached to its 5 ' carbon via an ester bond” (sparknotes.com/biology). DNA and RNA both contain genetic information, however there several variations between the two. DNA contains the sugar deoxyribose and is a double-stranded molecule. Whereas, RNA contains the sugar ribose and is a single-stranded molecule. Furthermore, DNA acts as a storage and transfer system for genetic data, while RNA acts as the messenger (chemistry.about.com).
Chromosomes are thread-like structures which is positioned in the nucleus living things and is composed of protein and one molecule of deoxyribonucleic acid (DNA). The DNA is responsible for making living creatures unique. Human beings have 23 sets of chromosomes, for a total of 46 chromosomes. In order for organisms to function correctly, cells must constantly replace themselves by dividing into new cells. During this process, chromosomes ensure that DNA is copied and is copied and dispersed into…

Related Documents