Question

A nucleoside differs from a nucleotide. It lacks the:

• A. hydroxyl group
• B. sugar
• C. base
• D. phosphate group

Answer 1

The correct option is D phosphate group

Nucleoside:

Nucleoside consists of pentose sugar (ribose or deoxyribose) and nitrogenous base (A, T, G, C and U).

Nucleoside = Base + Sugar






Nucleotide:

Nucleotide

Nucleotide = Base + Sugar + Phosphate group.

Thus, nucleoside differs from a nucleotide as it lacks a phosphate group.




Final answer: c. phosphate group