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Question
As compared to a C3-plant, how many additional moleules of ATP are needed for net production of one molecule of hexose sugar by C4-plants:
As compared to a C3-plant, how many additional moleules of ATP are needed for net production of one molecule of hexose sugar by C4-plants:
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Solution
The correct option is D Twelve
In C4 plants, fixation of one carbon dioxide requires 5 ATP and 3 NADPH when compared to 3 ATP and 2 NADPH in C3 plants.
In both plants, Calvin cycle needs to make a total of 6 turns to produce a glucose molecule.
Hence, C4 plants need 12 ATP's more than C3 plants to synthesize an hexose molecule.
In C4 plants, fixation of one carbon dioxide requires 5 ATP and 3 NADPH when compared to 3 ATP and 2 NADPH in C3 plants.
In both plants, Calvin cycle needs to make a total of 6 turns to produce a glucose molecule.
Hence, C4 plants need 12 ATP's more than C3 plants to synthesize an hexose molecule.
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