Question

Cytidine is a

• A. Nitrogenous base
• B. Nucleoside
• C. Nucleotide
• D. Nucleic acid

Answer 1

The correct option is B Nucleoside

Cytosine (C) is a pyrimidine i.e, a nitrogenous base. A combination of a nitrogenous base (purine or pyrimidine) with a pentose sugar is known as a nucleoside. Thus the combination of cytosine with ribose sugar results in the formation of a nucleoside called as cytidine, Similarly, The combination of cytosine with deoxyribose sugar is called as deoxycytidine.

So, the correct answer is 'Nucleoside'.