Microbes as biocontrol agents β€” NEET Biology Questions

Practice 20 questions on Microbes as biocontrol agents from Microbes in human welfare (NCERT Class 12, Chapter 8). Free samples below β€” get all 20 in the app.

20 Questions Microbes in human welfare Class 12

Sample Questions β€” Microbes as biocontrol agents

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MCQ
Streptokinase is used in heart patients because it:
  • A. Contracts arteries
  • B. Causes vasoconstriction
  • C. Dissolves fibrin clots in blood vessels
  • D. Prevents platelet formation
βœ… Correct Answer: C
It is a clot-busting agent during myocardial infarction.
MCQ
Why did the discovery of penicillin mark a turning point in modern medicine?
  • A. It treated viral diseases
  • B. It boosted vaccine development
  • C. It demonstrated microbial antagonism
  • D. It opened the era of effective antibacterial treatment
βœ… Correct Answer: D
Penicillin became the first successful antibiotic, saving millions.
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MCQ
Full potential of Penicillin as therapeutic drug was established by:
  • A. Edward Jenner
  • B. Selman Waksman
  • C. Louis Pasteur
  • D. Chain and Florey
βœ… Correct Answer: D
Their work earned them a Nobel Prize in 1945.
MCQ
Statins are obtained from:
  • A. Monascus purpureus
  • B. Streptococcus
  • C. Penicillium
  • D. Saccharomyces
βœ… Correct Answer: A
This yeast is the source of statins.
MCQ
The term β€˜antibiotics’ was coined by:
  • A. Alexander Fleming
  • B. Selman Waksman
  • C. Louis Pasteur
  • D. Edward Jenner
βœ… Correct Answer: B
He introduced the term while working on streptomycin.

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