Question

How does nucleoside differ from nucleotide?

Answer 1

1. Nucleosides are made of a nitrogenous base, usually a purine or pyrimidine, and a five-carbon carbohydrate ribose.
2. A nucleotide is simply a nucleoside with an additional phosphate group.

Nucleoside	Nucleotide
1. Chemical composition - sugar and nitrogenous base only	1. Chemical composition - sugar, nitrogenous base, and a nitrogenous base
2. Used in medicines that act against virus and cancer-causing agents.	2. One of the major cancer-causing agents.