Describe how living things use anaerobic respiration to generate energy. In your answer, identify the main products generated by the two types of anaerobic respiration, and identify one organism that performs each type.

Without oxygen, organisms can just split glucose into two molecules of pyruvate. With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules. Thus, aerobic-respiration releases much more energy than anaerobic respiration. That's what Respiration to generate engery.