Biochemistry
Photosynthesis
The process by which plants, algae, and some bacteria convert light energy, carbon dioxide, and water into glucose and oxygen. The foundation of most food webs.
Biological Context
Photosynthesis captures solar energy and stores it in chemical bonds. It produces oxygen as a byproduct, making Earth's atmosphere breathable. Global photosynthesis fixes about 100 billion tons of carbon annually, powering nearly all life on Earth.