Multiple choice What is the function of the mitochondria? Lets things in and out of the cell. Gives the cell structure, support, and protection. Stores food, water, and waste. The powerhouse of the cell. Turns food into energy. Reveal answer Fill a bubble to check yourself D Correct answer Explanation Mitochondria are known as the powerhouses of the cell because they perform cellular respiration. This process converts nutrients, like glucose, into usable chemical energy in the form of ATP.