Which of the following statements is correct?

Biology Microbes in Human Welfare Skill Builder Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 26, 2026

Discovery of the first antibiotic, penicillin, was not a chance discovery.

Alexander Fleming while working on Streptococci observed a mould of Penicillium notatum growing in unwashed plates.

Alexander Fleming while working on Staphylococci observed a mould of Penicillium notatum growing in unwashed plates.

Howard Florey while working on Streptococci observed a mould of Penicillium notatum growing in unwashed plates.

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(c) When studying the Staphylococci bacterium, Alexander Fleming once saw a mould growing in one of his unwashed culture plates where Staphylococci could not grow. He discovered that it was due to a chemical the mould generated and gave it the name Penicillin after the mould Penicillium notatum. Ernst Chain and Howard Florey discovered its true potential as a powerful antibiotic decades later.

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