Name one likely outcome if the mitochondria in a cell stopped working (NEED ANSWER ASAP)

If your mitochondria fails then it will be extremely hard to covert the food into ATP. For cells that require a lot of energy like your muscles , the lack of ATP will cause you to start to fatigue. In extreme cases, infants die in the first year because no cell can work without energy.

F.Y.I   ATP is just a fancy way of saying energy!