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Process of Photosynthesis

Process of Photosynthesis - Process of Photosynthesis...

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Process of Photosynthesis The process of photosynthesis is conveniently divided into two parts: the energy-fixing reaction (also  called the light reaction) and the carbon-fixing reaction (also called the light-independent reaction, or  the dark reaction). Energy-fixing reaction The energy-fixing reaction of photosynthesis begins when light is absorbed in photosystem II in the  thylakoid membranes. The energy of the sunlight, captured in the P680 reaction center, activates  electrons to jump out of the chlorophyll molecules in the reaction center. These electrons pass  through a series of cytochromes in the nearby electron-transport system. After passing through the electron transport system, the energy-rich electrons eventually enter  photosystem 1. Some of the energy of the electron is lost as the electron moves along the chain of 
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