Which of the following alpha-amino acids does | vedclass

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(A) An $\alpha-$amino acid has a general structure $R-CH(NH_2)-COOH$. $A$ chiral carbon is a carbon atom bonded to four different groups. In Glycine,t

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Glycine

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(A) An $\alpha-$amino acid has a general structure $R-CH(NH_2)-COOH$. $A$ chiral carbon is a carbon atom bonded to four different groups. In Glycine,the $R$ group is a hydrogen atom $(-H)$. Thus,the structure of Glycine is $H_2N-CH_2-COOH$. Since the central carbon is bonded to two identical hydrogen atoms,it is achiral. All other amino acids listed have different $R$ groups,making their $\alpha-$carbon chiral.

List-$I$ (Amino acid)	List-$II$ (Positive reaction/Test for functional group present in side chain of amino acid)
$A$. Glutamine	$I$. Hinsberg's test
$B$. Lysine	$II$. Neutral $FeCl_3$ test
$C$. Tyrosine	$III$. Ceric ammonium nitrate test
$D$. Serine	$IV$. Hoffman bromamide degradation

Which of the following $\alpha-$amino acids does not contain a chiral carbon?

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