PATHOLOGY

Detailed explanation-1: -Viruses are non-cellular, microscopic infectious agents that can only replicate inside a host cell. From a biological perspective, viruses cannot be classified either a living organism or non-living.

Detailed explanation-2: -A virus is an infectious agent that can only replicate within a host organism. Viruses can infect a variety of living organisms, including bacteria, plants, and animals.

Detailed explanation-3: -A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat. A virus cannot replicate alone; instead, it must infect cells and use components of the host cell to make copies of itself.

Detailed explanation-4: -Viruses are considered as non-cellular organisms as they don’t perform cellular functions like metabolism, growth when present outside the body. As soon as they infect the host cell they start to reproduce.