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Photosynthesis (Photosynthesis converts light energy to the chemical…
Photosynthesis
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Alternative mechanisms of carbon fixation have evolved in hot, arid climates
In most plants (C3 plants), initial fixation of CO2 occurs via rubisco, forming a three-carbon compound, 3-phosphoglycerate
When rubisco adds O2 to RuBP, RuBP splits into a three-carbon compound and a two-carbon compound in a process called photorespiration
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This mode of carbon fixation is called crassulacean acid metabolism, or CAM
The mesophyll cells of CAM plants store the organic acids they make during the night in their vacuoles until morning, when the stomata close
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