The optically inactive amino acid is

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(B) All amino acids contain an amine group and a carboxyl group attached to the same alpha carbon atom. For an amino acid to be optically active,the a

Vedclass · Accepted Answer

Glycine

Vedclass · Answer

(B) All amino acids contain an amine group and a carboxyl group attached to the same alpha carbon atom. For an amino acid to be optically active,the alpha carbon must be chiral,meaning it must be bonded to four different groups. In $Glycine$ $(H_2N-CH_2-COOH)$,the alpha carbon is bonded to two hydrogen atoms,making it achiral. Therefore,$Glycine$ is the only optically inactive amino acid among the $20$ common amino acids. Thus,the correct option is $B$.

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