According to cell theory, scientists do not classify a virus as living because it does not have

Viruses do not behave like other living cells. For one, they can only reproduce within other organisms. And essentially that is about all they do. Granted there are negative reprocussions for the host organism, but the virus itself simply multiplies. Viruses are also smaller than cells and can use even simple bacteria as a host.

I don't know your options, but its definitely the organs and functions of actually cells.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

a symbiotic relationship with the mitochondria