Forms a protective outer layer that prevents damage from outside and also bursting if internal pressure is high.
Controls entry and exit of substances, pumping some of them in by active transport.
Contains enzymes that catalyze the chemical reactions of metabolism and contains DNA in region called the nucleoid.
Hair-like structures projecting from the cell wall, that can be ratcheted in and out; when connected to another bacterial cell they can be used to pull cells together.
Solid protein structures, with a corkscrew shape, projecting from the cell wall, which rotate and cause locomotion.
Region of the cytoplasm that contains naked DNA, which is the genetic information of the cell.