Question:
During respiration, Oxidative phosphorylation occurs in
During respiration, Oxidative phosphorylation occurs in
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The electron transport chain and ATP synthase are fixed in one mitochondrial membrane.
Updated On: Nov 12, 2026
- Cytoplasm only
- Mitochondrial matrix only
- Inner Mitochondrial membrane only
- Inter membrane space of Mitochondria
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Oxidative phosphorylation is the making of ATP using energy released when electrons pass along the electron transport chain to oxygen.
Step 2: Locate the machinery
The electron transport complexes and the ATP synthase (F\(_0\)-F\(_1\) particles) are embedded in the inner mitochondrial membrane. The proton gradient across it drives ATP formation.
Step 3: Compare with other stages
Glycolysis occurs in the cytoplasm and the Krebs cycle in the mitochondrial matrix, so neither is the site of this process.
Step 4: Conclusion
Oxidative phosphorylation occurs only in the inner mitochondrial membrane.
Final Answer:
Oxidative phosphorylation takes place only in the inner mitochondrial membrane. \[ \boxed{\text{(C) }\text{Inner Mitochondrial membrane only}} \]
Oxidative phosphorylation is the making of ATP using energy released when electrons pass along the electron transport chain to oxygen.
Step 2: Locate the machinery
The electron transport complexes and the ATP synthase (F\(_0\)-F\(_1\) particles) are embedded in the inner mitochondrial membrane. The proton gradient across it drives ATP formation.
Step 3: Compare with other stages
Glycolysis occurs in the cytoplasm and the Krebs cycle in the mitochondrial matrix, so neither is the site of this process.
Step 4: Conclusion
Oxidative phosphorylation occurs only in the inner mitochondrial membrane.
Final Answer:
Oxidative phosphorylation takes place only in the inner mitochondrial membrane. \[ \boxed{\text{(C) }\text{Inner Mitochondrial membrane only}} \]
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