Energy in foods is made available to cells through cellular respiration.
During cellular respiration, food materials, usually in the form of carbohydrates are broken down and the energy locked up in them extracted for cellular metabolism.
The extracted energy is in the form of ATP and the overall equation of the reaction is given as:
C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP
More on cellular respiration can be found here: https://brainly.com/question/1439976?referrer=searchResults