The f2 generation phenotypes resulting from the monohybrid cross of purebreds display a ratio of
4: 1
2: 1
3: 1
none of the above

The correct answer for this question is this one: "2:1"

There exists the same question from other source that shown the monohybrid cross.

The F2 generation phenotypes resulting from the monohybrid cross of purebreds display a ratio of 2:1
Hope this helps answer your question and have a nice day ahead.

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.