What are antibiotics?
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A.
Drugs prepared from moulds and mould like organisms
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B.
Special medicines used during surgical operations
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C.
Sleeping pills
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D.
Anaesthetic substances
Correct Answer:
A. Drugs prepared from moulds and mould like organisms
Explanation:
Antibiotics are chemical substances primarily derived from microorganisms like molds, fungi, and bacteria that have the capacity to inhibit the growth of or destroy pathogenic bacteria. Penicillin, the first widely used antibiotic, was discovered by Alexander Fleming from the Penicillium mold. These drugs are essential in modern medicine for treating bacterial infections by interfering with the vital processes of the bacteria without harming the host's cells. Therefore, they are defined as medications prepared from molds and similar organisms used to combat bacterial diseases.
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