Question

A nucleoside is made of:-

Options

• A base and sugar

• A base and phosphoric acid

• A sugar and phosphoric acid

• A sugar, a base and phosphoric acid

Answer 1

A base and sugar

Explanation:

Nucleosides (bottom) are a five-carbon carbohydrate ribose and a nitrogenous base, usually a purzine or pyrimidine. A nucleotide is simply a nucleoside with an additional phosphate group or groups (blue); ribonucleotides or RNA are polynucleotides containing the carbohydrate ribose.