What is an antibiotic?

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A A substance that kills viruses.
B A chemical that kills bacteria by blocking their biochemical pathway.
C A vaccine.
D A type of nutrient.

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Answer: B. A chemical that kills bacteria by blocking their biochemical pathway.

Answer: b) A chemical that kills bacteria by blocking their biochemical pathway.
Explanation: Antibiotics are used specifically for bacterial infections.

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What is an antibiotic?

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