The standard free energy change for the hydrolysis of GTP (guanosine triphosphate) to GDP + P_i is -7.3 kcal/mol, similar to that for ATP.From this information, one can conclude that the

Question

Quizplus · Accepted Answer

The negative standard free energy change (-7.3 kcal/mol) indicates that the hydrolysis reaction of GTP to GDP and phosphate is exergonic, which means it releases energy. Therefore, Option E is the correct answer. Option A is incorrect because the negative free energy change ensures that the reaction will eventually reach equilibrium. Option B is incorrect because the free energy of GDP and phosphate is lower than the free energy of GTP. Option C is incorrect because the hydrolysis reaction releases energy instead of requiring it. Option D is also incorrect because the reaction releases energy.

The Standard Free Energy Change for the Hydrolysis of GTP