Correct option is C
The correct answer is (c) Electron transport chain.
• The Electron Transport Chain (ETC) produces about 32–34 ATP molecules, the highest in cellular respiration.
• It occurs in the inner mitochondrial membrane in eukaryotic cells.
Information Booster
• Glycolysis produces 2 ATP molecules.
• Krebs cycle produces 2 ATP (as GTP) per glucose.
• ETC uses NADH and FADH₂ as electron donors.
• Oxygen is the final electron acceptor forming water.
Additional Knowledge
• ETC involves cytochromes and ATP synthase.
• Fermentation produces only 2 ATP and occurs without oxygen.
• Cellular respiration equation was explained by Hans Krebs.
• Mitochondria are called the powerhouse of the cell.
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