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Which of the following combinations is required for chemiosmosis?
membrane, proton pump, proton gradient, ATP synthase
membrane, proton pump, proton gradient, NADP synthase
proton pump, electron gradient, ATP synthase
proton pump, electron gradient, NADP synthase
Answers (1)
The correct combination required for chemiosmosis is:
Option 1) membrane, proton pump, proton gradient, ATP synthase.
Chemiosmosis is the process by which ATP (adenosine triphosphate) is synthesized using the energy generated by the movement of protons (H+) across a membrane. In this process, a membrane is necessary to create a barrier for the proton movement. A proton pump actively transports protons across the membrane, creating a proton gradient. This proton gradient serves as a source of potential energy. ATP synthase is an enzyme located in the membrane that utilizes this proton gradient to generate ATP.
Option 2) (membrane, proton pump, proton gradient, NADP synthase) is incorrect because NADP synthase is not involved in chemiosmosis. NADP synthase is not a known enzyme involved in ATP synthesis.
Option 3) (proton pump, electron gradient, ATP synthase) is also incorrect because chemiosmosis primarily involves the movement of protons (H+) and not electrons.
Option 4) (proton pump, electron gradient, NADP synthase) is incorrect for the same reasons as Option 2 and Option 3.
Therefore, the correct combination required for chemiosmosis is Option 1.
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