NEET2023Zoology-Nucleic Acids

NEET 2023 Zoology DNA Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 11

Given below are two statements:

Statement I: A unit formed by the attachment of a base to 1' position of sugar is known as nucleoside.

Statement II: When nucleoside is linked to phosphorous acid at 5'-position of sugar moiety, we get nucleotide.

In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are false.

B

Statement I is true but Statement II is false.

C

Statement I is false but Statement II is true.

D

Both Statement I and Statement II are true.

Correct Answer

Option B

Detailed Explanation

Statement I is true as nucleoside is formed by attaching a base to sugar. Statement II is false because nucleotides are formed by linking nucleoside to phosphoric acid, not phosphorous acid.

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