For the hydrolysis of ATP to ADP + ℗ᵢ,the free energy change is -7.3 kcal/mol under standard conditions (1 M concentration of both reactants and products).In the cellular environment,however,the free energy change is about -13 kcal/mol.What can we conclude about the free energy change for the formation of ATP from ADP and℗ ᵢ under cellular conditions?

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The free energy change for the hydrolysis of ATP to ADP + ℗ᵢ is -7.3 kcal/mol under standard conditions. However, in the cellular environment, the free energy change is about -13 kcal/mol. This means that the formation of ATP from ADP and ℗ᵢ under cellular conditions will have a free energy change of approximately +13 kcal/mol, as the reverse of a reaction has the opposite sign of free energy change. Therefore, the answer is C: It is about +13 kcal/mol.

For the Hydrolysis of ATP to ADP + ℗ᵢ,The Free