Published by:
CGP EDU Academic Team
Published on: August 12, 2026
In aqueous solution, amino acids mostly exist as :
A
NH 2 – CHR – COOH
B
NH 2 – CHR – COO –
C
– CHR – COOH
D
– CHR – COO –
Text Solution
Verified by ExpertsThe correct answer is:
D
Amino acids mostly exist in zwitter ion (dipolar ion) because acidic "H" of –COOH accept by the basic 
group.
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