Question

multiple - choice question
what are the three parts of all nucleotides?
a phosphate group
a nitrogenous base
an enzyme

Explanation:

Nucleotides are the building - blocks of nucleic acids. They consist of a phosphate group, a nitrogenous base, and a five - carbon sugar (not shown in options here). Enzymes are proteins that catalyze reactions and are not part of nucleotides.

Answer:

a phosphate group, a nitrogenous base