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Question
Which amino acid is not optically active?
Which amino acid is not optically active?
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Solution
The correct option is A Glycine
All amino acids have an amine and a carboxyl group They also have a functional group which is unique to each of them. Depending on the polarity of the functional group the amino acid can be rendered optically inactive or active. The simplest of all amino acids, Glycine which has H as a functional group lacks optical acitivity, as the saturated alpha carbon is unsubstituted. Others among the 20 amino acids have D or L stereoisomers. So, the correct answer is 'Glycine'.
All amino acids have an amine and a carboxyl group They also have a functional group which is unique to each of them. Depending on the polarity of the functional group the amino acid can be rendered optically inactive or active. The simplest of all amino acids, Glycine which has H as a functional group lacks optical acitivity, as the saturated alpha carbon is unsubstituted. Others among the 20 amino acids have D or L stereoisomers. So, the correct answer is 'Glycine'.
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