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Photosynthesis converts light energy into chemical energy stored in organic compounds (often carbohydrates).
Photosynthesis is a set of biological processes used by photopigment-bearing autotrophs (such as most plants, algae, and cyanobacteria) to convert light energy—usually from sunlight—into chemical energy that powers metabolism. In oxygenic photosynthesis (the most common form), light energy drives the splitting of water, releasing oxygen as a byproduct. The captured energy is stored in the chemical bonds of organic compounds, especially carbohydrates like sugars and starches. The purpose of photosynthesis is twofold: (1) to produce and maintain the oxygen content of Earth’s atmosphere and (2) to supply most of the biological energy needed for complex life. Photosynthetic organisms capture light, use it to generate energy carriers (such as ATP and NADPH), and then use those products to fix carbon dioxide into carbohydrates (e.g., via the Calvin cycle). Some organisms perform anoxygenic photosynthesis, which does not release oxygen, using other electron donors instead of water.
Photosynthesis converts light energy into chemical energy stored in organic compounds (often carbohydrates).
Oxygenic photosynthesis uses water as an electron source and releases oxygen as a byproduct.
Photosynthesis is essential for Earth’s atmospheric oxygen and provides most of the energy supporting complex life.
In oxygenic organisms, light-dependent reactions generate ATP and NADPH, which power carbon fixation (e.g., the Calvin cycle).
Some bacteria perform anoxygenic photosynthesis using electron donors other than water.
A biological process in which photopigment-bearing autotrophs convert light energy into chemical energy for metabolism.
A type of photosynthesis that splits water to release oxygen as a byproduct.
An organism that produces its own organic compounds from inorganic carbon sources using energy (such as light).
The process of converting atmospheric carbon dioxide into organic compounds (carbohydrates) during photosynthesis.
The stage of photosynthesis where light energy is used to produce ATP and NADPH and, in oxygenic photosynthesis, to split water and release O2.
The stage of photosynthesis where ATP and NADPH are used to fix CO2 into sugars.
A type of photosynthesis that does not produce oxygen, typically using electron donors other than water.
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