8. What factor is most important in the cell differentiation that occurs during the
metamorphosis of a tadpole into a frog or a
caterpillar into a butterfly?
A. the expression of different genes at
different times
B. the variation in temperature at a given time
of year
C. the frequency with which females are able
to reproduce
D. the location of where the eggs are deposited

They must use the scientific method

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.