Biology · PYQ NEET UG 2020

Which of the following statements is NOT correct?

1. A
   The proinsulin has an extra peptide called C-peptide.
2. B
   The functional insulin has A and B chains linked together by hydrogen bonds.
3. C
   Genetically engineered insulin is produced in E. coli.
4. D
   In man, insulin is synthesised as a proinsulin.