The stent energy in the form of ADP is regenerated by mitochondria into__________?
Correct answer: C. ATP
- A. AMP
- B. ADP
- C. ATP
- D. All of these
Explanation
Mitochondria regenerate ATP from ADP by adding inorganic phosphate during oxidative phosphorylation: ADP + phosphate forms ATP. ATP is the immediately usable energy-carrying molecule, whereas AMP has fewer phosphate groups and is not the normal product of this regeneration. The likely mistake is choosing ADP because it appears in the question, even though ADP is the starting molecule.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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