- no nucleus
- 10x smaller
- DNA in circular structure
- reproduce by binary fission
- single cellular structure
- use flagella to move
- can use anaerobic respiration and aerobic
3. Gram staining is importana in medicine because the two groups of bacteria differ in their susceptibility to different antibiotic would be most usefu in fighting an infection.
4. Conjugation is a process in which two organisms exchange genetic material.

