- Exam
- NEET
- Year
- 2021
- Subject
- Zoology
- Chapter
- Biotechnology and Its Applications
NEET 2021 · Zoology · Biotechnology and Its Applications
With regard to insulin choose correct options. (a) C-peptide is not...
With regard to insulin choose correct options.
(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.
Options
- A(b) and (d) only
- B(b) and (c) only
- C(a), (c) and (d) only
- D(a) and (d) only
Correct answer
C. (a), (c) and (d) only
Step-by-step solution
Insulin is a protein hormone that is composed of two chains, an A-chain having amino acids and a B-chain having amino acids, linked together by disulphide bonds (S-S). Insulin is derived from a amino acid prohormone molecule called proinsulin having C-peptide and this is removed before the processing of mature insulin and during the production of recombinant insulin, the two chains were separately produced and then linked with each other. C-peptide is absent in mature insulin.