What is a virus?

Virus:

1. The virus is a small, simple infectious agent.
2. It can only reproduce in the live cells of animals, plants, or microorganisms.
3. The word virus comes from the Latin word "slimy liquid" or “poison”.
4. Viruses are well-known for producing disease, having caused extensive illness and death in the past.
5. Viruses are three types such as plant viruses, animal viruses, and bacteria viruses.
6. Example of viruses is flu virus, tobacco mosaic virus, etc.
7. The nucleic acid, which serves as genetic material, is either DNA or RNA.
8. They are significantly smaller than bacteria.
9. They can replicate in plant or animal cells.
10. They exist outside of the living cell as active particles surrounded by a protein coat.