Nucleotides

Monomers of nucleic acids (DNA/RNA); Consist of 3 components: 1. Nitrogenous Base: Purines (Adenine, Guanine) or Pyrimidines (Cytosine, Thymine, Uracil), 2. Pentose Sugar: Ribose (RNA) or Deoxyribose (DNA), 3. Phosphate Group; Nucleoside + Phosphate = Nucleotide (linked by phosphodiester bond).