Biologymedium · Past Paper
What components make up a single nucleotide of DNA?
ASugar and phosphate only
BSugar and nitrogenous base only
CPhosphate and nitrogenous base only
DSugar, phosphate, and nitrogenous base
✓ Correct Answer: D — Sugar, phosphate, and nitrogenous base
A nucleotide is the building block of DNA, consisting of a deoxyribose sugar, a phosphate group, and one of four nitrogenous bases.
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