A. A. Fleming
B. Paul Ehrlich
C. Gregory Mendal
D. Dr Jonas E. Salk
✅ The correct answer is option A.
Penicillin was invented by A. Fleming. In 1928 Alexander Fleming (1881–1955) discovered penicillin, made from the Penicillium notatum mold, but he did not receive the Nobel Prize in Physiology or Medicine for his discovery until 1945.
Penicillin was invented by A. Fleming. In 1928 Alexander Fleming (1881–1955) discovered penicillin, made from the Penicillium notatum mold, but he did not receive the Nobel Prize in Physiology or Medicine for his discovery until 1945.