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Chemiosmosis and ATP synthase Knowledge-Based Practice

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on Chemiosmosis and ATP synthase. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    During oxidative phosphorylation in mitochondria, what directly provides the immediate source of energy that powers ATP synthase to synthesize ATP from ADP and inorganic phosphate?

    • A) The direct transfer of high-energy electrons from NADH to the catalytic subunits of ATP synthase
    • B) The flow of protons down their electrochemical gradient from the intermembrane space into the matrix
    • C) The exergonic hydrolysis of pyruvate molecules within the mitochondrial matrix
    • D) The active transport of sodium ions across the inner mitochondrial membrane

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