Scandium through zinc, to what general class of elements do they belong

Scandium through zinc belong to the general class of elements called TRANSITION METALS.
Transition metals refers to those elements in the D block of the periodic table; these include group three to twelve of the periodic table. From group 3 to 12, the elements are 38 in number and all of them are malleable, ductile and they can conduct heat.

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.