What did mendel's cross-pollination of pea plants prove?

hereditary factors do not combine but are passed on in the same form they were inherited.

dominant traits are always expressed and recessive traits are always hidden.

factors carry the code for proteins in segments of dna.

different offspring of the same parents inherit identical characteristics.

From the cross-pollination experiment done by Mendel, the findings can be summarized into: (1) principle of segregation, and (2) principle of independent assortment. According to the first principle, the pair of alleles of each parent separate and only one from each parent can be passed on to the offspring. This is most likely saying like that of the first sentence. 

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.