Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________.

Bio-Chemistry (M.Phil./Ph.D.) 2020 Panjab University Entrance Exam With Answers

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38.

Of the 20 standard amino acids, only _ is not optically active. The reason is that its side chain _.

A: Glycine; is a hydrogen atom

B: Alanine; is a simple methyl group

C: Lysine; contains only nitrogen

D: Proline; forms a covalent bond with the amino group

The answer is: A

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