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Solution


Q.

Identify the correct statements.

A. Arginine and Tryptophan are essential amino acids.
B. Histidine does not contain heterocyclic ring in its structure.
C. Proline is a six membered cyclic ring amino acid.
D. Glycine does not have chiral centre.
E. Cysteine has characteristic feature of side chain as MeS−CH2−CH2−.

Choose the correct answer from the options given below :    [2026]
1 C and D Only  
2 A and D Only  
3 B and E Only  
4 C and E Only  

Ans.

(2)

· Histidine does contain heterocyclic ring.

· Proline is a five membered cyclic ring amino acid.

· Cysteine has characteristic feature of side chain as CH2–SMe.