Chemistry-Proteins
NEET Chemistry Proteins MCQ Question
Type: MCQ-numerical-Hard-Class 12
Which of the following is the number of optically active naturally occurring α-amino acids, given that glycine is not optically active?
A
19
B
18
C
20
D
21
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, except glycine, all other naturally occurring α-amino acids are optically active. Since there are 20 standard amino acids and glycine is not optically active, there are 19 optically active amino acids.
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