Who accidentally discovered that fungus Penicillium produces a substance that destroys staphylococci?

Appeared in: AIIMS Bhopal NO - 2018 (Shift-1st)

Explanation

Alexander Fleming, a Scottish physician, accidentally discovered penicillin in 1928.
He observed that a mold, Penicillium notatum, had contaminated a culture plate of Staphylococcus bacteria and was inhibiting its growth.
Fleming identified the substance produced by the mold as penicillin, which became the world's first antibiotic.
This discovery was a turning point in medicine, leading to the era of antibiotics for treating bacterial infections.

Option B: Eduard Buchner was a German chemist and zymologist, not a microbiologist focused on antibiotics.
Option C: Karl Popper was an influential philosopher of science, not a medical researcher or scientist.
Option D: Alexander Domagk discovered Prontosil, the first commercially available antibacterial drug, which belongs to the sulfonamide class.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain History of Microbiology and Antibiotics as background academic context rather than a clinical decision trigger.
The discovery of penicillin revolutionized the treatment of bacterial infections, saving millions of lives from diseases like pneumonia, syphilis, and wound infections.
Nurses play a crucial role in administering antibiotics and must be vigilant about potential allergic reactions. Penicillin allergy is one of the most commonly reported drug allergies.
What if? If a patient with a known severe penicillin allergy requires treatment for a bacterial infection, the nurse must ensure this information is clearly communicated to the healthcare team so an alternative antibiotic (e.g., a cephalosporin or macrolide, depending on the infection and cross-reactivity risk) can be prescribed.

How to Approach the Question

This is a factual recall question about a significant event in medical history.
Identify the key elements in the question: 'fungus Penicillium', 'destroys staphylococci', and 'accidentally discovered'.
Recall or deduce the historical figures associated with major discoveries in microbiology and pharmacology.
Associate the discovery of penicillin with Alexander Fleming.
Evaluate the other options to confirm they are known for different achievements (e.g., sulfa drugs, fermentation, philosophy), thus ruling them out.

Concept Tested & Keywords

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E6 Microbiology Applied AnjuDhir 3e Part 1 p. 36-38

E6 Microbiology Essentials Sastry 4e Part 1 p. 26-28

Practise the full AIIMS Bhopal NO - 2018 (Shift-1st)

Attempt every question from this paper in a timed mock, then review the full solution for each one.