Which common antibiotic was first discovered from a mold by Alexander Fleming?
A
Tetracycline
B
Penicillin
C
Amoxicillin
D
Streptomycin
Correct Answer: Option B — Penicillin
Explanation:
Penicillin was first discovered by Alexander Fleming from the mold Penicillium notatum marking a major breakthrough in medicine that revolutionized the treatment of bacterial infections.