Suppose you take a sealed, air-filled balloon, squeeze it and then release it. Next, you take the balloon and place it in a refrigerator for half an hour, then remove it. In each case, explain the changes in volume, pressure, and temperature.

From our previous experiment, we examined how many drops a penny can hold - and place drops of salt water on the penny after recording 5 trials each, take the average of each solution.

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.