Answer:
To produce ATP.
Step-by-step explanation:
Our cells do cellular respiration in order to produce energy molecules in the form of ATP after break down of glucose molecules. This energy is used ifor different activities. in cellular respiration, more number of ATP are produced in aerobic respiration as compared to anaerobic respiration which produces less number of ATP molecules. Our cells are not on fire because of the production of very low amount of ethanol which is 3g.