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Question
Assertion: All naturally occurring α-aminoacids except glycine are optically active.
Reason: Most naturally occurring amino acids have L-configuration.
Options
Assertion and reason both are correct statements and reason explains the assertion.
Both assertion and reason are wrong statements.
Assertion is correct statement and reason is wrong statement.
Assertion is wrong statement and reason is correct statement.
Assertion and reason both are correct statements but reason does not explain assertion.
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Solution
Assertion and reason both are correct statements but reason does not explain assertion.
Explanation:
Expect glycine, all other naturally occurring α-amino acids are optically active, since the α-carbon atom is asymmetric. These exist both in ‘D’ and ‘L’ forms. Most naturally occurring amino acids have L-configuration. L-Amino acids are represented by writing the –NH2 group on left-hand side.
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