What is contained within a nucleoside?
A) a ribose moiety, a nitrogenous base and a phosphate covalently attached to the ribose 5' carbon
B) a ribose moiety, a purine or pyrimidine, and a phosphate covalently linked to the 3' carbon of the ribose.
C) a ribose moiety and a nitrogenous base
D) a deoxyribose, a purine or pyrimidine, and a phosphate linked to the ribose 5' carbon by a hydrogen bond.

Question

Quizplus · Accepted Answer

A nucleoside is composed of a pentose sugar (either ribose or deoxyribose) and a nitrogenous base. The ribose moiety and nitrogenous base are linked by a glycosidic bond between the ribose's anomeric carbon and the nitrogenous base's nitrogen. There is no phosphate group attached to the nucleoside in this definition.

What Is Contained Within a Nucleoside