Given below are two statements: Statement I : Amino acids have a property of ionizable nature of - NH 2 and - COOH groups, hence have different structures at different pH. Statement-II : Amino acids can exist as Zwitterionic form at acidic and basic pH. In the light of the above statements, choose the most appropriate answer from the options given below:

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are correct

Both Statement I and Statement II are incorrect

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Biomolecules question

2022 · Q80

Biomolecules question

2022 · Q80

View written solutionFree

Correct answer: D

Option (d) is the correct answer as statement I is correct but statement II is incorrect.

A particular property of amino acids is the ionizable nature of $-$NH₂ and $-$COOH groups. Hence, in solutions of different pH, the structure of amino acid changes. Amino acid exists as a dipolar ion called a zwitterion at a particular pH called isoelectric point.

NEET 2022 Phase 2 Biology - Biomolecules Question 27 English Explanation

(B) is called zwitterionic form.

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Biomolecules question

2022 · Q80

Biomolecules question

2022 · Q80

View written solutionFree

Correct answer: D

Option (d) is the correct answer as statement I is correct but statement II is incorrect.

A particular property of amino acids is the ionizable nature of $-$NH₂ and $-$COOH groups. Hence, in solutions of different pH, the structure of amino acid changes. Amino acid exists as a dipolar ion called a zwitterion at a particular pH called isoelectric point.

(B) is called zwitterionic form.