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Process by which green plants use sunlight to make foods from carbon dioxide and water.
Main events of photosynthesis
1. Light is absorbed. 2. Water is split into protons (H+), electrons and oxygen. 3 Light energises electrons. 4. Carbon dioxide is used to make Glucose
Cyclic electron pathway
The high energy electrons pass from chlorophyll to a series of electron acceptors and back to chlorophyll. Makes ATP
low energy molecule which binds with 2 electrons and a proton (H+) to form a high energy molecule
Non-Cyclic electron pathway
Two high energy electrons are passed from chlorophyll to electron acceptor but do not go back to the chlorophyll. Used to make more ATP and NADPH
Events in Dark stage
Carbon dioxide is taken in and combines with hydrogen ions. The carbon dioxide is reduced to glucose
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