Which one of the following statements is correct? - Vidyadip

MCQ

Which one of the following statements is correct?

A
All amino acids except lysine are optically active
B
All amino acids are optically active
✓
All amino acids except glycine are optically active
D
All amino acids except glutamic acids are optically active

✓

Answer

Correct option: C.

All amino acids except glycine are optically active

c
With the exception of glycine all the $19$ other common amino acids have a uniquely different functional group on the central tetrahedral alpha carbon

$\mathop {\begin{array}{*{20}{c}}
{H\,\,\,\,\,\,\,\,\,\,\,\,}\\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
{H - C - COOH}\\
{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
{\,N{H_2}\,\,\,\,\,\,\,\,}
\end{array}}\limits_{{\rm{Glycine}}} $

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