Electron transport chain Knowledge-Based Practice

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on Electron transport chain. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    During aerobic cellular respiration, what is the primary role of molecular oxygen in the mitochondrial electron transport chain?

    • A) To directly phosphorylate ADP into ATP inside the mitochondrial matrix
    • B) To act as the terminal electron acceptor and combine with protons to form water
    • C) To oxidize NADH to NAD+\text{NAD}^+ at Complex I
    • D) To actively pump hydrogen ions across the inner mitochondrial membrane

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