Question

_________ is one of the best-known antibiotics invented by Alexander Fleming, used to treat bacterial infections.

Answer 1

1. Antibiotics are antimicrobial drugs obtained from other organisms (such as molds, fungi, and some soil bacteria) to combat harmful microorganisms.
2. However, they are not very useful against certain microbes such as viruses.
3. They are useful in preventing and curing a number of bacterial infections.

Penicillin is one of the best-known antibiotics invented by Alexander Fleming and used to treat bacterial infections.