Bacteria are living cells -- cell membrane and all that cell stuff. A virus doesn't own it's own cell; it invades a cell and takes over, using the host cell to make more viruses.
A pathogenic bacterium is alive while a virus is not.
Bacteria has both DNA and RNA where as Virus has either DNA or RNA
Bacteria are not dependent on a host. :)
It is not. HIV is a virus. It has a completely different make-up from a bacteria. The most important difference between a bacteria and a virus is that a virus does not have the ability to replicate on its own. It needs a host, another cell, to reproduce, unlike bacteria which can reproduce on their own.
Viruses are (debatably) not alive while bacteria are; meaning they are smaller and require a living host to survive. Bacteria are killed with antibiotics, but viruses are not.
The only difference between viral and bacterial encephalitis is what causes it. They are exactly the same condition except one is started via a virus and one is started by a bacteria.
A virus runs in a thread, as do all programs. The difference between a generic thread and a virus is that the thread may not be harmful, while the virus generally is.
The difference between a common animal virus and a retrovirus is that a retrovirus only contains RNA while a common animal virus will have DNA or RNA.
Bacteria and virus
Smallpox was a virus.
virus
Bacteria metabolize ingested nutrients. Viruses do not do this. Bacteria reproduce by fusion. A virus needs a host to reproduce. Bacteria exchange gases with the environment. A virus does do this. A bacteria is motile in many cases. Flagella. Viruses must depend on the current in solution. As you see viruses do not have any of the markers of living organisms, but some biologists do not fully agree that viruses are not a sort of living organism.