BIOLOGY
AMINO ACIDS
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Detailed explanation-1: -From the structure of glycine, it can be concluded that it does not contain chiral centre.
Detailed explanation-2: -In the case of the amino acid, this includes the carboxylic acid functional group, the amine functional group, the various R-groups, and the hydrogen. Only glycine, which contains hydrogen as its R-group does not have chirality.
Detailed explanation-3: -Glycine and -methylalanine are achiral amino acids, but they become chiral when one of the hydrogen atoms of the methylene group of glycine or one of the methyl groups of -methylalanine are deuterated.
Detailed explanation-4: -Because glycine does not contain 4 different substituents, it is not chiral and is the only exception in all the amino acids.