Archaea bacteria resemble prokaryotic cells, but have more functional connections to eukaryotic organisms. Escherichia coli E. coli Strain name follows, usually in parentheses. The outermost layer is a tough cell wall . The flagellum enables a cell to swim through a liguid medium. The motility is due to the possession of one or more flagella.
Flagellar motility involves energy-requiring rotation of the flagellum from the basal body.
This results in random walk. They both are called Chemoeffectors When a Chemoeffector binds or leaves a receptor, the effect is to inhibit or promote certain intracellular signaling pathway. This pathway notifies the flagella to move either CW or CCW in order to bias the random walk towards the change of the effector gredient.