Discussion
Which type of force drives the flagellar motion?
Answer: A
Correct answer: Protonmotive force
The flagellar motor is driven by the proton-motive force - protons flowing back into the cell through the Mot channels - and not by ATP. This is why a cell whose respiration is poisoned stops swimming even while it still has ATP, and it distinguishes the bacterial flagellum sharply from the ATP-driven eukaryotic one.
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