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Which of the following statement is not ...

Which of the following statement is not correct ?

A

proteins are polyamides formed from amino aicds

B

except glycine, all other amino acids show optical activity

C

natural proteins are made up of L -isomers of amino acids

D

in `alpha` amino acids, `-NH_(2) and -COOH` groups are attached to different carbon atoms

Text Solution

Verified by Experts

The correct Answer is:
D
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