Viruses are often considered non-living entities because they

Question

cannot reproduce outside a host cell
have a cellular structure
perform metabolic processes on their own
can be treated with antibiotics

Answer 1

Viruses are often considered non-living entities because they cannot reproduce outside a host cell. They rely on a host's cellular machinery to replicate and carry out metabolic processes, and they do not have the cellular structure typical of living organisms. Additionally, since they are not cells and lack the cellular processes necessary for life, they cannot be treated with antibiotics, which target bacterial cells.