Mr. Doe wanted to perform an experiment to determine if doing a class review before a test would increase test scores. Mr. Doe normally does not review. To perform this experiment, Mr. Doe reviewed material with the 2nd period before a test and did not review with the 3rd period. After grading papers, he found that the 2nd period had an average grade of 93 and the 3rd period had an average grade of 72. He determined that reviewing before a test might increase test scores. Find the control group and experimental group. Find the independent and dependent variables.

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.

Ijust took the test on edgenuity and the answer is "life would cease to exist". hope this !