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Chemicals produced by bacteria and fungi, and which treat infections caused by bacteria, are known as

  • A.fungi
  • B.antibiotics
  • C.micro-organisms
  • D.viruses

Answer: B

Correct answer: antibiotics

Antibiotics are substances produced by microorganisms - moulds and soil bacteria - that kill or inhibit other microorganisms. Penicillin from Penicillium is the type case. They act on bacterial structures such as the cell wall and the 70S ribosome, which is why they are useless against viruses.

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