Question

question 5 of 20 : select the best answer for the question. 5. elizabeth is getting ready to run a marathon. shes hoping that the atp in her body is good for long - term energy storage for the race. why is her thinking incorrect? a. atp takes too long to transfer oxygen from the lungs to the legs. b. atp doesnt release energy fast enough to support running. c. running requires only potential energy to work muscles. d. atp is an unstable molecule. mark for review (will be highlighted on the review page) << previous question next question >>

Explanation:

To determine why Elizabeth's thinking is incorrect, we analyze each option:

• Option A: ATP is not involved in oxygen transfer; that's the role of hemoglobin in blood. So A is incorrect.
• Option B: ATP releases energy quickly to support immediate cellular work, including muscle contractions during running. So B is incorrect.
• Option C: Running requires kinetic energy (from muscle movement) and chemical energy (from ATP), not just potential energy. So C is incorrect.
• Option D: ATP is an unstable molecule, meaning it can't store energy for long periods. Long - term energy storage in the body is done by molecules like glycogen or fat. So Elizabeth's thinking is incorrect because ATP is unstable and not suitable for long - term energy storage.

Answer:

D. ATP is an unstable molecule.