The structures found in a living cell can be compared to the parts of a factory. Which cell structure would you compare to the generator that produces energy in the factory? It would compare to the chloroplast because they use radiant energy to function.
It would compare to the mitochondria because they make energy for the cell.
It would compare to the mitochondria because these are found in both plant and animal cells.
It would compare to the chloroplast because a factory is more like a plant cell.