human
What's the difference between a virus and a bacteria?
assistant
The main difference between viruses and bacteria is that viruses are much smaller than bacteria. Viruses are made up of genetic material surrounded by a protein coat, while bacteria are single-celled organisms with cell walls. Bacteria can be either beneficial or harmful to humans depending on their type. Viruses, on the other hand, cannot reproduce without infecting a host cell and therefore cannot cause disease in humans.