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Question

Chemistry Question on Biomolecules

In alkaline medium, glycine exists predominantly as

A

zwitter ion

B

anion

C

covalent form

D

cation

Answer

anion

Explanation

Solution

In alkaline medium (high pHpH ) amino acids exists as negatively charged particle (carboxyl group donates proton).

H2N−CH2−COOH−>[High ph]H2N−CH2−COO−H_2N-CH_2 -COOH { ->[{\text{High ph}}] }H_2N-CH_2-COO^{-}