12. which of these cell structures converts energy stored in food into compounds the cell can use?

Your lungs, stomach, and your intestines are part if tge curculatory system which helos break doen your food so that you can have the energy you need to do stuff. Your esophagus ehich is in your throat transports bolus or food that you have chewed to your stomach

There is tumerous cancer, kawaski disease and more.