A. Phosphate group
B. Sugar
C. Amino acid
D. Nitrogenous base
Answer: Amino acid
A. Phosphate group
B. Sugar
C. Amino acid
D. Nitrogenous base
Answer: Amino acid
Additional Information: A nucleotide is composed of a phosphate group, a sugar, and a nitrogenous base, but not an amino acid.
Subjects: Biochemistry, Biology