Fleming's discovery of penicillin in 1928 arose from which laboratory occurrence?

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Multiple Choice

Fleming's discovery of penicillin in 1928 arose from which laboratory occurrence?

Explanation:
Fleming’s breakthrough came from an unintended mold contaminant on a plate containing Staphylococcus. The Penicillium mold landed in the culture and inhibited bacterial growth around it, leaving a clear zone. This accidental contamination revealed that a substance produced by the mold could kill or stop the bacteria, which he named penicillin. The event was not the result of a designed experiment or a calculation error, but of a contaminant in the lab—an unexpected occurrence that led to a major medical advance.

Fleming’s breakthrough came from an unintended mold contaminant on a plate containing Staphylococcus. The Penicillium mold landed in the culture and inhibited bacterial growth around it, leaving a clear zone. This accidental contamination revealed that a substance produced by the mold could kill or stop the bacteria, which he named penicillin. The event was not the result of a designed experiment or a calculation error, but of a contaminant in the lab—an unexpected occurrence that led to a major medical advance.

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