Bacteria are microscopic single-celled organisms.
Bacterial cells are simpler than plant and animal cells: bacterial cells don't have a 'true' nucleus, mitochondria, chloroplasts or a vacuole.
- May have a Flagellum
- Will have a Cell Wall To maintain their shape and stop the bacterium from absorbing water and bursting
- Will have bacterial DNA for cell replication and to control the cell's activities.