Which one of the following microorganisms produces cyclosporin A?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Trichoderma polysporum
Cyclosporin A is a bioactive molecule used as an immunosuppressive agent. It weakens the immune response, so it is given to organ-transplant patients to stop the body from rejecting the new organ.
(1) Aspergillus niger — Incorrect. This fungus produces citric acid.
(2) Trichoderma polysporum — Correct. Cyclosporin A is produced by this fungus.
(3) Clostridium butylicum — Incorrect. This bacterium produces butyric acid.
(4) Saccharomyces cerevisiae — Incorrect. This yeast (brewer’s yeast) is used to make bread and to produce ethanol.
NCERT Extract:
Chemicals, Enzymes and Other Bioactive Molecules – …
