Answer: Human insulin (from E. coli).
- A Penicillin extracted from Penicillium mold
- B Human insulin (from E. coli)
- C Aspirin synthesized chemically from salicylic acid
- D Vitamin C produced by microbial fermentation
Correct answer: B. Human insulin (from E. coli)
Explanation: Recombinant human insulin was the first major product of biotechnology (1982). The insulin gene was inserted into E. coli.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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