A) Streptomycin
B) Tetracycline
C) Penicillin
D) Terramycin
Correct Answer: C
Solution :
Penicillin antibiotic was discovered by Alexander Fleming (1928). Penicillin can be obtained from different sp. of mould, Penicillium. Penicillin inhibits the cell wall formation in +ve bacteria thus, effective against some streptococci, staphylococci and several spirochaetes.
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