Photorespiration in plants is similar to cellular respiration in that both forms of metabolism involve the consumption of oxygen and the release of carbon dioxide. However, the process of photorespiration is dependent upon the presence of light, whereas cellular respiration does not. In order for photorespiration to occur plants must utilize chloroplasts, peroxisomes, and mitochondria to initiate this process. In contrast cellular respiration occurs primarily in the mitochondria. Lastly, the primary driving force of the photorespiratory reaction is the binding of oxygen to ribulose biphosphate via rubisco. This reaction produces carbon dioxide, but yields no ATP and will increase photosynthetic output in plants. Cellular respiration in a simplified form is the breakdown of glucose for the production of ATP.