Question:
The formation of ATP by oxidative phosphorylation takes place in ____.
The formation of ATP by oxidative phosphorylation takes place in ____.
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Oxidative phosphorylation is linked to the electron transport system in the inner mitochondrial membrane.
Updated On: Nov 12, 2026
- Glycolysis
- Krebs cycle
- ETS
- Fermentation
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Oxidative phosphorylation is the synthesis of ATP using energy released as electrons flow from NADH and \(\text{FADH}_{2}\) to oxygen.
Step 2: Where it occurs
The electron transport system (ETS) pumps protons, and ATP synthase in the inner mitochondrial membrane makes ATP.
Step 3: Other pathways
Glycolysis and the Krebs cycle make ATP or GTP only by substrate-level phosphorylation. Fermentation does not use an electron transport chain.
Final Answer:
Oxidative phosphorylation takes place in the ETS. \[ \boxed{\text{(C) }\text{ETS}} \]
Oxidative phosphorylation is the synthesis of ATP using energy released as electrons flow from NADH and \(\text{FADH}_{2}\) to oxygen.
Step 2: Where it occurs
The electron transport system (ETS) pumps protons, and ATP synthase in the inner mitochondrial membrane makes ATP.
Step 3: Other pathways
Glycolysis and the Krebs cycle make ATP or GTP only by substrate-level phosphorylation. Fermentation does not use an electron transport chain.
Final Answer:
Oxidative phosphorylation takes place in the ETS. \[ \boxed{\text{(C) }\text{ETS}} \]
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