Energy sources utilization k Energy sources of living organisms Direct donator of energy: ATP Reserve form of energy: CP Energy sources: food Glucose(I mol): aerobic glycolysis yields 38 mol ATP; anaerobic glycolysis yields 2 mol ATP Fat: 1 mol 6C fatty acid yield 44 mol ATP Protein; rarely used as energy donator• Energy sources & utilization * Energy sources of living organisms Direct donator of energy: ATP Reserve form of energy: CP Energy sources: food Glucose (1 mol): aerobic glycolysis yields 38 mol ATP; anaerobic glycolysis yields 2 mol ATP Fat: 1 mol 6C fatty acid yield 44 mol ATP Protein: rarely used as energy donator