Cells are restricted to being small in size. why are cells limited in size a the surface area of the cell membrane can only allow a certain amount of molecules into the cell. b the greater the volume of a cell’s cytoplasm the more materials the cell needs for survival. c both of these are true.

The answer is definetly A

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.