1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following structures <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/16d0b127dc7ac82b1c3349bbe2d04b8c-.png /> Identify I and II in the above structure and mark the correct option.

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Q. Consider the following structures
image
Identify I and II in the above structure and mark the correct option.

Biomolecules

Solution:

A unit formed by the attachment of a base to $1'$ position of sugar is known as nucleoside. In nucleosides the sugar carbons are numbered as $1', 2', 3'$ etc., in order to distinguish these from the bases. When nucleoside is linked to phosphoric acid at $5'$-position of sugar moiety, we get a nucleotide.