NEETZoology-Biomolecules
NEET Zoology Amino Acids MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Amino acids generally exist in the form of Zwitter ions. This means they contain
A
Basic –NH₂ group and acidic –COOH group
B
The basic –NH₃⁺ group and acidic –COO⁻ group
C
Basic –NH₂ and acidic –H⁺ group
D
Basic –COO⁻ group and acidic –NH₃⁺ group
Correct Answer
Option B
Detailed Explanation
In zwitterions, the amino group is protonated to –NH₃⁺ and the carboxyl group is deprotonated to –COO⁻, making the molecule neutral.
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