Photosynthesis is used by plants and other organisms to convert light energy into chemical energy. Though cellular respiration, the energy van later be released to fuel the activities of the organism.
Cellular respiration is a metabolic reaction that occur in the cells of organisms to convert chemical energy from O2 molecules or nutrients into ATP then release waste products.
4. Cellular respiration takes place in the cells of all living things. It occurs in the cells of both autotrophs and heterotrophs. All of them burn glucose to form ATP.
5. Autotrophs can make their own food from substances from their surrounding using photosynthesis. It can manufacture energy from the sun. Heterotrophs cannot synthesize their own food and rely on other organisms for nutrition. It must rely on other organisms for energy.