Final answer:
Glycerol and fatty acids are not components of a nucleotide; the three main components are a pentose sugar, a nitrogenous base, and a phosphate group.
Step-by-step explanation:
The component of a nucleotide that is not part of its structure is 1. Glycerol and fatty acids. A standard nucleotide is composed of three essential parts: a pentose sugar, a nitrogenous base, and one or more phosphate groups. The sugar in a DNA nucleotide is deoxyribose, which differs from ribose (found in RNA) by having an H instead of an OH at the 2' position of the sugar. Nitrogenous bases are categorized into purines and pyrimidines, with purines having a double-ring structure and pyrimidines a single-ring. Lastly, the phosphate group(s) link to the 5' carbon of the sugar and play a key role in the backbone structure of DNA and RNA.