In this article we will discuss about the relations among nucleic acids, nucleotides and nucleosides. Nucleic Acids: These are defined as polynucleotides composed of repeating units ribonucleotides (in RNA) or deoxyribonucleotides (in DNA). The difference between the two structure is that in deoxyribonudeotides there is no-OH group in position 2′. The presence of three esterifiable-OH […]