Photosynthesis is the process by which green plants, algae, and some bacteria convert carbon dioxide (CO₂) and water (H₂O) into glucose (C₆H₁₂O₆) and oxygen (O₂) using sunlight as energy. During this process, chlorophyll captures solar energy to facilitate the transformation of light energy into chemical energy, which is stored in the glucose molecules.
Cellular respiration, on the other hand, is the process by which cells break down glucose (C₆H₁₂O₆) in the presence of oxygen (O₂) to produce energy in the form of adenosine triphosphate (ATP), along with carbon dioxide (CO₂) and water (H₂O) as byproducts. This process is essential for supplying energy to living organisms, allowing them to perform various biological functions.