Can you describe the location and function of the two systems of carbon dioxide fixation in carbon four plants?


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The details of the C4 cycle - After entering through stomata, CO2 diffuses into a mesophyll cell.Being close to the leaf surface, these cells are exposed to high levels of O2, but have no RUBISCO so cannot start photorespiration (nor the dark reactions of the Calvin cycle). Instead the CO2 is inserted into a 3-carbon compound (C3) called (see rest @ http://bit.ly/yXSKci)

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