Insulin is a relatively small protein, comprising two polypeptides, one of 21 amino acids (the A chain) and the other of 30 amino acids (the B chain) that are linked together by disulphide bonds/bridges formed between cysteine amino acids.
NEET UG 2020 — Zoology Biotechnology and Its Applications
Which of the following statements is not correct?
Held on 30 Apr 2020 · Verified 9 Jul 2026.
The proinsulin has an extra peptide called C-peptide.
The functional insulin has A and B chains linked together by hydrogen bonds.
Genetically engineered insulin is produced in E.Coli.
In man insulin is synthesised as a proinsulin
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Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?
Given below are two statements : Statement I : Transfer RNAs and ribosomal RNA do not interact with mRNA. Statement II : RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence. In the light of the above statements, choose the most appropriate answer from the options given below :
Silencing of specific mRNA is possible via RNAi because of
Match List I with List II :  Choose the correct answer form the options given below:
Match List-I with List-II : \begin{array}{llll} List-I & & List-II \\A.Genetically engineered Human Insulin & I. & Gene therapy \\B. GM Cotton & II.& E. coli \\C. ADA Deficiency & III.& Antigen-antibody interaction \\D. ELISA & IV. & Bacillus thuringiensis\end{array} Choose the correct answer from the options given below:
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