Why is a virus considered non-living?

Viruses:

1. Viruses are acellular organisms.
2. They have an inactive crystalline structure.
3. Once they take over the machinery of the host cell, they replicate themselves.
4. They are obligate parasites.
5. Their genetic material could either be DNA or RNA and is infectious.

Viruses are non-living:

1. Viruses are not considered living as they do not resemble other living organisms.
2. They did not find a place in the classification system as they aren't truly living.
3. They are not made up of cells like other living organisms.