Which of the following amino acids does not c | vedclass

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(B) An asymmetric carbon (or chiral center) is a carbon atom bonded to four different groups. Glycine has the structure $H_2N-CH_2-COOH$. In glycine,t

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Glycine

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(B) An asymmetric carbon (or chiral center) is a carbon atom bonded to four different groups. Glycine has the structure $H_2N-CH_2-COOH$. In glycine,the central carbon atom is bonded to two identical hydrogen atoms,so it is not asymmetric (achiral). All other amino acids listed,such as histidine,$\alpha-$ alanine,and threonine,contain at least one chiral carbon atom. Therefore,the correct option is $B$.

Which of the following amino acids does not contain an asymmetric carbon?

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