Question: what is the difference between a nitrogenous base and a nucleotide?
Answer: Contrast: A nucleotide is composed of a phosphate group, 5-carbon sugar, and nitrogenous base. ... Internally composed of nitrogen, hydrogen or oxygen molecules that are added on to the basic ring to make nitrogenous bases: adenine, guanine, cytosine, thymine (DNA only) or uracil (RNA only).