What are the differences between virus and bacteria?

Answer 1

Similarities:

1.Both are very small (measured in nanometers)

2.Both can cause disease, or are pathogens. Although some bacteria do not cause disease.

Answer 2

Viruses are smaller than bacteria and require a host cell to reproduce, while bacteria are single-celled organisms capable of independent growth. Viruses cause infections by invading host cells and hijacking their machinery, while bacteria can cause infections by releasing toxins or multiplying in the host's tissues. Antibiotics can treat bacterial infections but are not effective against viruses.