MCAT - DNA/RNA Bases

nucleoside

contain a five carbon sugar bound to a nitrogenous base (lack phosphates on 5' carbon)

nucleotide

nucleosides with one to three phosphate groups (contain deoxyribose in DNA, ribose in RNA)

C6-C4, N1-N3

A-U Pairing

C6-C4, N1-N3

Adenine-Thymine Pairing

Pyrimidine

C,U,T, single aromatic ring

Purine

G,A, double ringed, 6 member and five member

C6-C4, N1-N3, C2-C2

G-C pairing