Which structure in a eukaryotic cell is the main site of ATP production by oxidative phosphorylation?
Answer and explanation
Correct answer: A. The mitochondrion, whose inner membrane holds the electron transport chain and ATP synthase
- Step 1: Oxidative phosphorylation couples electron transport to ATP synthase. Step 2. These complexes sit in the inner mitochondrial membrane. Answer: mitochondrion. Why not the others: the Golgi apparatus processes and sorts proteins, the rough ER makes membrane and secreted proteins, and lysosomes digest material; none runs the electron transport chain.
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