Question

q3.5. which of the following does not store potential energy that is usable by a cell? atp protons pumped into the intermembrane space nadh co2 q3.6. some students have the misconception that during cellular respiration, the matter in glucose is somehow turned into energy. consider that when we exercise, we burn glucose and also lose mass. why does this happen? our cells use up the potential energy stored in glucose, and losing energy during exercise reduces our mass. our cells convert the mass in glucose into energy, which is weightless. losing energy that is used during exercise reduces our mass. our cells convert glucose into co2 and water, which are eliminated from our bodies when we exercise.

Explanation:

In cellular respiration, ATP is the main usable energy - storing molecule, protons are pumped to create an electrochemical gradient for ATP synthesis, and NADH is an electron - carrier that helps in ATP production. CO₂ is a by - product of glucose breakdown and does not store potential energy in the way ATP, protons in an electrochemical gradient, or NADH do. When glucose is burned during exercise, it is oxidized to CO₂ and water, releasing energy and reducing mass.

Answer:

CO₂