Which of the following is true regarding the proton gradient established across the inner mitochondrial membrane during oxidative phosphorylation?
- AProtons are pumped from the intermembrane space to the mitochondrial matrix.
- BProtons are pumped from the mitochondrial matrix to the intermembrane space.
- CThe concentration of protons is higher in the mitochondrial matrix.
- DIt is directly generated by the hydrolysis of ATP.
✓ Correct answer: B
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