Answer:
A virus is a non living bacteria part of your body that causes lots of effects and sicknesses. This causes a lot of diseases.
Chicken pox for example, a highly contagious disease caused by the initial infection.
Bacteria is a living particle inside your body that runs through. This also causes diseases as well but not only that, they make you dirty and disgusting. For example Cholera, it gives you low heart rate and tired muscles and more effects on your body and in.
It is a type of medicine used for destroying micro organisms. Too much ant biotics can lead you to be sick, too much of what you need is very bad.
DNA can identify what and how microbes work and what they are.
Microbes are useful by processing and preserving food, and this causes the production of biomolecules.