Nucleotides and Nucleosides – Definition, Structure, Function, Types
Nucleotides are comprised of three distinguishing elements: (1) a nitrogenous (nitrogen-containing) base, (2) a pentose, and (3) a phosphate. A nucleoside is the molecule without the phosphate group. The nitrogenous bases are derived from pyrimidine and purine, two parent molecules. The common nucleotides’ bases and pentoses are heterocyclic compounds. The base of a nucleotide is … Read more