Why was Sir Alexander Fleming's discovery in 1928 considered one of the most important discoveries in the 20th century?

Why was Sir Alexander Fleming's discovery in 1928 considered one of the most important discoveries in the 20th century?

• A. Allowed early anesthesia
• B. Provided a cure for life threatening infections
• C. Led to discovery of DNA structure
• D. Eliminated the need for vaccines

Answer: (B)

The key idea is how an antibiotic transformed medicine by making many bacterial infections curable. Fleming’s 1928 observation—the mold contaminating a bacterial culture inhibited the growth of the bacteria, leading to the identification of penicillin—the first true antibiotic. This discovery shifted the outcome of countless infections from deadly to treatable, saving countless lives and enabling advances like safer surgeries and organ transplants. It didn’t relate to anesthesia, the discovery of DNA structure, or the elimination of vaccines, making the “provided a cure for life-threatening infections” option the one that best captures the impact of Fleming’s finding.

The key idea is how an antibiotic transformed medicine by making many bacterial infections curable. Fleming’s 1928 observation—the mold contaminating a bacterial culture inhibited the growth of the bacteria, leading to the identification of penicillin—the first true antibiotic. This discovery shifted the outcome of countless infections from deadly to treatable, saving countless lives and enabling advances like safer surgeries and organ transplants. It didn’t relate to anesthesia, the discovery of DNA structure, or the elimination of vaccines, making the “provided a cure for life-threatening infections” option the one that best captures the impact of Fleming’s finding.