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The pumping of hydrogen ions (protons) across membranes during chemiosmosis is an example of which type of cellular transport?



active


facilitated diffusion


osmosis


endocytosis

Verified Answer :

MissPhiladelphia

I believe the correct answer from the choices listed above is the second option. Chemiosmosis is the process of using a hydrogen concentration and electrochemical gradient to move hydrogen ions through a specialized protein channel, thus driving a chemical process. Therefore, it is a facilitated diffusion which uses regular diffusion as the driving force (i.e. the molecule moves from high to low concentration), but unlike regular diffusion does so only through specialized channels.

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