Question

In 1928, a scientist discovered the first effective antibiotic. Scientist and antibiotic are

• A. Waksman—Streptomycin
• B. Waksman—Penicillin
• C. Fleming—Streptomycin
• D. Fleming—Penicillin

Answer 1

The correct option is D Fleming—Penicillin

Discovery of penicillin

• Penicillin was discovered by Alexander Fleming in 1928 when he noticed that one of his experimental cultures of $Staphylococci,$ in unwashed petri dishes, was contaminated with mould.
• The region around the mould was clear without any bacterial colonies.
• He concluded that the chemicals produced by the mould are preventing the growth of bacteria.
• He named the chemical, penicillin, after the mould $Penicilliumnotatum.$

Discovery of streptomycin
Streptomycin is an antibiotic that was first used against tuberculosis. In 1943, Albert Schatz (a student of Waksman) discovered and isolated the antibiotic from $Streptomycesgriseus.$

Final answer
(B) Fleming—Penicillin