12. List 3 methods that can be used to measure productivity.

Time-set amount of time
Efficiency-how much they were able to get done in that amount of time
Progression-quantity how much you competed and how far you went

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.

The answer is c the potato slice shriveled because water moved out of the slice into the salt solution