The enzyme alpha amylase can be found in saliva and helps to start the digestion of food. In order to work optimally, calcium and chlorine ions must be bound to it. In this example, calcium and chlorine are examples of...

Ithink that its like 15 mph.

The answer is c i just finished taking the test

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.