Moderate

Where does respiratory electron transport occurs____________________?

Correct answer: B. Inner membrane of mitochondria

  • A. Cytoplasm
  • B. Inner membrane of mitochondria
  • C. matrix of mitochondria
  • D. Chloroplast

Explanation

In aerobic respiration, the electron transport chain is embedded in the inner mitochondrial membrane, where electrons pass through carriers and drive ATP formation. The matrix contains enzymes of the Krebs cycle, not the electron transport chain itself.

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