Answer:
The source of the energy required to regenerate ATP is the chemical energy stored in food (glucose) The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called respiration . Some of the energy released is used to produce ATP. So I believe it would be chemical energy
Step-by-step explanation:
LOL OMG I JUST HAD A TEST ABOUT THIS LIKE 30 MINS AGO HAHA!