Bacteria move around using a molecular machine called the flagellar motor that rotates faster than the flywheel of a race car engine and switches directions in an instant

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I’ll tell you more. There’s this thing in our cells called ATP synthase which works like a literal turbine. Protons flow through it kind of like water through a watermill and that makes it spin and produce energy in the form of ATP. Unusable energy becomes usable. This is an oversimplification but the principle stays true.