Explain why the nuclear membrane should dissolve during mitosis. what is the "risk" to the cell if the nuclear membrane is dissolved?

During Mitosis in the cell, the nucleus membrane must dissolve to allow the spindle fibers that pull apart the sister chromatids to the daughter cells access the chromatids. While this is required for mitosis, it poses a risk to the genetic material of the cells.
The nucleus membrane acts as a barrier from the cytoplasm of the cell to protect the DNA and RNA from the material that may cause damage to the genetic code. During this period, therefore, the "risk" for mutation of the genetic materials are high.

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.