Q.

With regard to insulin choose correct options.                               [2021]

(A) C-peptide is not present in mature insulin.
(B) The insulin produced by rDNA technology has C-peptide.
(C) The pro-insulin has C-peptide.
(D) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.

Choose the correct answer from the options given below:

1 (A) and (D) only  
2 (B) and (D) only  
3 (B) and (C) only  
4 (A), (C) and (D) only  

Ans.

(4)

The insulin produced by rDNA technology does not contain C peptide.