Using a Compound Microscope lab report

The best way to tell its true color is to look at the minerals streak

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.

Other organisms can change their behavior to take the place of the plants in the ecosystem.