
- All bacteria are prokaryotes. (lack a membrane bound nucleus)
- All bacteria are unicellular. (only have one cell)
- They may be spherical (coccus), rodlike (bacillus), spiral (spirillum).
- On average, bacteria are 1 micrometre long and 0.5 micrometres wide.
- Bacteria are surrounded by a lipid membrane.
- A cell wall lies outside the cell membrane.
- Bacteria move by flagella, secreting slime or by axial filiments.
- Bacteria reproduce through binary fission, which is asexual.

Examples:
- Bacteria,
- Nostoc,
- Blue green algae,
- Bacillus,
- Halo bacterium ....
No comments:
Post a Comment