Which of the following does not explain why if two people are exposed to the same high stress causing conditions, there is a likelihood that they will not be affected the same way? A) the two have different lifestyles B) some people are not at all affected by stress C) gene-environment interactions may affect the level of depression D) people react differently to stress E) presence of a specific gene variation

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.