How many turns of the Calvin–Benson cycle are required togenerate 50 molecules of glyceraldehyde 3-phosphate? To utilizeeight molecules of NADPH?
Question
How many turns of the Calvin–Benson cycle are required togenerate 50 molecules of glyceraldehyde 3-phosphate? To utilizeeight molecules of NADPH?
Solution
The Calvin-Benson cycle, also known as the light-independent reactions or the dark reactions, is a process that plants use to turn carbon dioxide into glucose.
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To generate one molecule of glyceraldehyde 3-phosphate (G3P), the Calvin-Benson cycle needs to turn three times. This is because each turn of the cycle fixes one molecule of carbon dioxide and it takes three molecules of carbon dioxide to make one molecule of G3P.
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Therefore, to generate 50 molecules of G3P, the cycle would need to turn 50 * 3 = 150 times.
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The Calvin-Benson cycle uses two molecules of NADPH for each turn of the cycle.
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Therefore, to utilize eight molecules of NADPH, the cycle would need to turn 8 / 2 = 4 times.
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