Question

(7) Name the unit formed by the attachment of a base to 1' position of sugar in a
nucleoside.​

Answer 1

A nucleoside consist of a base and a moleculesof sugar and phosphoric acid.they are formed by the attachment of base to 1 position of sugar in a nucleoside.

Answer 2

Nucleotide is formed by the attachment of a base to 1' position of sugar in a  nucleoside.​

Explanation:

• Nucleotide are the main building blocks of the DNA (Deoxyribonucleic acid ) and RNA (Ribonucleic acid ).

• These are the molecules having a nucleoside and phosphate group present in them.  

• A nucleotide consists of a 'five-carbon' sugar molecule, a 'nitrogenous base', and one phosphate group.

• These three components mentioned above joined to form a nucleotide which is also termed a nucleoside monophosphate.

• So, the unit formed by the addition of a base to '1' position of sugar'  is Nucleotide.

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