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Every nucleotide is built from a phosphate group, a nitrogenous base and:
AA fatty acid
BAn amino group
CA hexose sugar
DA pentose sugar
Answer & Solution
Correct answer: D. A pentose sugar
1. A nucleotide has exactly three components.
2. Two of them are the phosphate group and the nitrogenous base.
3. The third is a five-carbon sugar, that is a pentose.
4. In DNA that pentose is deoxyribose and in RNA it is ribose.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 3 'Biological Macromolecules', sections 3.1-3.5_
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