Question
Isabelle wants to determine whether a homeostatic process requires energy to proceed. Which characteristic should she look for?
a reaction that is coupled to the hydrolysis of ATP
a reaction that is coupled to the production of ATP
movement of a substance across a membrane with a gradient
movement of a substance across a membrane in both directions
a reaction that is coupled to the hydrolysis of ATP
a reaction that is coupled to the production of ATP
movement of a substance across a membrane with a gradient
movement of a substance across a membrane in both directions
Answers
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GPT-5 mini
a reaction that is coupled to the hydrolysis of ATP
Reason: coupling to ATP hydrolysis (ATP → ADP + Pi) indicates the process requires input of energy to drive it. Movements down a gradient are passive (no energy), and ATP production indicates the process generates energy rather than consumes it.
Reason: coupling to ATP hydrolysis (ATP → ADP + Pi) indicates the process requires input of energy to drive it. Movements down a gradient are passive (no energy), and ATP production indicates the process generates energy rather than consumes it.