Breaking down food to release energy?

The process of breaking down food to create energy is called digestion. Digestion is necessary for other biological processes, such as movement and growth, to occur.

Not sure if that person's answer would answer your question but it sure as heck didn't answer mine... so I looked it up. The answer you might be looking for is binary fission. Not 100% sure though so don't be mad if i'm wrong. -_-