When 10 000 molecules of ATP are hydrolyzed to ADP and℗ ᵢ in a test tube,about twice as much heat is liberated as when a cell hydrolyzes the same amount of ATP.Which of the following is the best explanation for this observation?

Question

Quizplus · Accepted Answer

Living systems use the energy released from ATP hydrolysis to perform work, such as muscle contraction or active transport. In contrast, the ATP hydrolysis in a test tube is not coupled to any specific biological process, so the energy is released as heat. Therefore, the observation that heat production is higher in the test tube than in a cell is due to the fact that cells use the energy from ATP hydrolysis for specific processes, whereas the test tube reaction does not.

When 10 000 Molecules of ATP Are Hydrolyzed to ADP