Question
Which one of the following statements is correct?
A.
All amino acids except lysine are optically active
B.
All amino acids are optically active
C.
All amino acids except glycine are optically active
D.
All amino acids except glutamic acids are optically
active
Answer :
All amino acids except glycine are optically active
Solution :
With the exception of glycine all the 19 other common amino acids have a uniquely different functional group on the central tetrahedral alpha carbon.
Polypeptides, proteins and urea have
( peptide ) linkage while carbohydrates have glycosidic llinkages. So, test of carbohydtrates should be different from that of other three.
With the exception of glycine all the 19 other common amino acids have a uniquely different functional group on the central tetrahedral alpha carbon.
Polypeptides, proteins and urea have
( peptide ) linkage while carbohydrates have glycosidic llinkages. So, test of carbohydtrates should be different from that of other three.
