PATHOLOGY

Detailed explanation-1: -Viruses can’t reproduce on their own (unlike bacteria) so they aren’t considered ‘living’, but they can survive on surfaces for a varying level of time. Viruses are a non-living collection of molecules that need a host to survive.

Detailed explanation-2: -Viruses are not classified as being alive because they don’t have their own machinery for reproducing. They can only take over the machinery of cells, turning them into virus factories. Q. A virus is considered as a living organism and an obligate parasite when inside a host cell.

Detailed explanation-3: -Bacteriophages, also known as phages, are viruses that infect and replicate only in bacterial cells. They are ubiquitous in the environment and are recognized as the most abundant biological agent on earth.