Final answer:
During cellular respiration, electron carrier proteins create a concentration gradient of H+ molecules, which powers the synthesis of ATP through ATP synthase.
Explanation:
During cellular respiration, electron carrier proteins use energy from moving electrons to create a concentration gradient of H+ molecules. The movement of these H+ ions across the membrane powers ATP synthase, which catalyzes the synthesis of ATP from ADP and phosphate, providing cells with energy for various biological processes.
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