Question 13

(Multiple Choice)

The free-energy change of ATP hydrolysis to ADP inside the cell is about -50 kJ/mole. The standard free-energy change for the same reaction is about -30 kJ/mole. This necessitates that [ATP] inside the cell be …


A) higher than that under standard conditions.
B) greater than [ADP].
C) greater than [ADP] × [Pᵢ]
D) greater than [ADP] × [Pᵢ] × Kₑq
E) greater than [ADP] × [Pᵢ] / Kₑq

Answer