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Q. What is an antibiotic -

  • (A) A synthetic compound inhibiting the growth of other organisms
  • (B) A chemical compound produced by a living organism that inhibits the growth of other organisms
  • (C) A synthetic compound inhibiting the growth of bacteria
  • (D) A compound synthesised by a living organism that inhibits the growth of microbes
  • Correct Answer - Option(B)
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Explanation by: Admin

Antibiotics are substances naturally produced by microorganisms (such as bacteria and fungi) that inhibit or kill other microorganisms, primarily bacteria.

  • Option C ("A synthetic compound inhibiting the growth of bacteria") is incorrect because antibiotics are not necessarily synthetic. While some antibiotics are modified synthetically (semi-synthetic antibiotics), the original antibiotics (like penicillin) are naturally produced by microbes.

Thus, option B is the most accurate because it correctly states that antibiotics are produced by living organisms and inhibit the growth of other organisms.

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