Why is the discovery of penicillin considered revolutionary in medicine?

Correct option is B

The correct answer is: (B) It began the antibiotic era

• The discovery of penicillin by Alexander Fleming in 1928 marked the beginning of the antibiotic era.

• Penicillin was the first true antibiotic, capable of killing or inhibiting the growth of bacteria, and was particularly effective against gram-positive bacterial infections.

• Its widespread use during World War II drastically reduced deaths from infected wounds and revolutionized the treatment of bacterial diseases like pneumonia, syphilis, and strep throat.

• Penicillin is produced by the fungus Penicillium notatum.

• It works by inhibiting bacterial cell wall synthesis, making it lethal to certain bacteria.

• Mass production began in the early 1940s, led by researchers like Howard Florey and Ernst Boris Chain, who shared the 1945 Nobel Prize in Medicine with Fleming.

• Before antibiotics, even minor infections could be life-threatening.

• The discovery of penicillin laid the foundation for the development of many other antibiotic drugs like streptomycin and tetracycline.

• Option A is incorrect: Penicillin is not a painkiller; it's an antibacterial agent.

• Option C is incorrect: It has no use in colouring bacteria.

• Option D is incorrect: Penicillin was used extensively in humans, especially during and after World War II.

• The misuse and overuse of antibiotics like penicillin have led to antibiotic resistance, a major modern-day health concern.

• Penicillin is part of the β-lactam class of antibiotics and is most effective against non-resistant strains.