The Free-Energy Change for ATP Hydrolysis to ADP Inside the Cell

question 17

Multiple Choice

The free-energy change for ATP hydrolysis to ADP inside the cell is about -50 kJ/mole. The complete cellular oxidation of glucose to carbon dioxide and water has a free-energy change of about -3000 kJ/mole. What is the efficiency of the cellular metabolism in harvesting this amount of free energy in the form of ATP synthesis?

• A) About 10%
• B) About 20%
• C) About 30%
• D) About 50%
• E) About 70%

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