i think you may like this : https://en.wikipedia.org/wiki/Flagellum#Bacterial https://en.wikipedia.org/wiki/Flagellum#Bacterial >> The engine is powered by pr

i think you may like this : https://en.wikipedia.org/wiki/Flagellum#Bacterial https://en.wikipedia.org/wiki/Flagellum#Bacterial >> The engine is powered by proton motive force, i.e., by the flow of protons (hydrogen ions) across the bacterial cell membrane due to a concentration gradient set up by the cell's metabolism <<