Question:
Who discovered penicillin?
Who discovered penicillin?
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This scientist noticed a mould killing bacteria on a culture plate.
Updated On: Jul 16, 2026
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Solution and Explanation
Step 1: The correct answer is Alexander Fleming.
Step 2: Alexander Fleming, a Scottish scientist, discovered penicillin in 1928 when he noticed that a mould growing on a culture plate had killed the bacteria around it.
Step 3: This mould, Penicillium, led to the development of the first widely used antibiotic, which went on to save countless lives from bacterial infections.
Step 4: Fleming shared the Nobel Prize in Physiology or Medicine for this discovery in 1945.
Step 2: Alexander Fleming, a Scottish scientist, discovered penicillin in 1928 when he noticed that a mould growing on a culture plate had killed the bacteria around it.
Step 3: This mould, Penicillium, led to the development of the first widely used antibiotic, which went on to save countless lives from bacterial infections.
Step 4: Fleming shared the Nobel Prize in Physiology or Medicine for this discovery in 1945.
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