All of the following statements were part of the original cell theory proposed by Schleiden and Schwann, and many others including Remak and Virchow, with the EXCEPTION of

A) all cells come from other cells.
B) the cell is the most basic unit of life.
C) all living things are composed of one or more cells.
D) viruses are not living since they are smaller than a cell.

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.