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Railways PYQCBT 1 2016

RRB NTPC · Question 38

Which of the following was the first antibiotic discovered by Alexander Fleming in 1928?

  1. Penicillin

  2. Prontosil

  3. Streptomycin

  4. Tetracyline

Show answer & explanation

Answer: (A) Penicillin

Explanation

In 1928 Alexander Fleming noticed that the mould Penicillium notatum killed bacteria on a culture plate. The substance it produced, penicillin, was the first true antibiotic; Fleming shared the 1945 Nobel Prize for it.