Cellular respiration and photosynthesis are critical cyclic processes that support life on Earth. Photosynthesis uses sunlight, water and carbon dioxide to produce glucose and oxygen in chloroplasts. Cellular respiration in mitochondria uses glucose and oxygen to produce carbon dioxide, water, and ATP. These interdependent processes are linked to specific organelles and have been vitally important to the evolution and diversity of life through their cyclic interaction of matter and energy transfer.