IMMUNOLOGY

Detailed explanation-1: -Antibiotics are used to treat or prevent some types of bacterial infection. They kill bacteria or prevent them from reproducing and spreading. Antibiotics aren’t effective against viral infections. This includes the common cold, flu, most coughs and sore throats.

Detailed explanation-2: -Antibiotics kill bacteria, not archaea, fungi, or protists. The discovery of the antibiotic penicillin in the 1920s made a big impact on human history. Not only did it lead to a cure for bacterial infections that were once deadly, but it also led a big interest in finding new antibiotics.

Detailed explanation-3: -Antibiotics damage the cell wall of living organisms leading to their death. The viruses do not have a cell wall. Antibiotics are produced by bacteria and fungi that treat bacterial infections, not viral infections because viruses use host cells to perform their activities. So, they cannot kill viruses.