Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation).
This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, from the Greek φῶς, phōs, "light", and σύνθεσις, synthesis, "putting together".
In most cases, oxygen is also released as a waste product.
Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs.
government has interpreted the peacefulness of the movement as a weakness: the people's non-violent policies have been taken as a green light for government violence.
Refusal to resort to force has been interpreted by the government as an invitat.
Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies all of the organic compounds and most of the energy necessary for life on Earth.
In plants, algae and cyanobacteria, long-term energy storage in the form of sugars is produced by a subsequent sequence of reactions called the Calvin cycle; some bacteria use different mechanisms, such as the reverse Krebs cycle, to achieve the same end.Composite image showing the global distribution of photosynthesis, including both oceanic phytoplankton and terrestrial vegetation.Dark red and blue-green indicate regions of high photosynthetic activity in the ocean and on land, respectively.In plants, these proteins are held inside organelles called chloroplasts, which are most abundant in leaf cells, while in bacteria they are embedded in the plasma membrane.In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas.
In the Calvin cycle, atmospheric carbon dioxide is incorporated into already existing organic carbon compounds, such as ribulose bisphosphate (Ru BP).