In the same oak leaf that absorbed 15,440 photons, how many CO2 molecules are fixed to produce the glyceraldehyde-3-phosphate molecules that are used as building blocks for hexose sugars?

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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In the same oak leaf that absorbed 15,440 photons, how many CO2 molecules are fixed to produce the glyceraldehyde-3-phosphate molecules that are used as building blocks for hexose sugars?

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Step 1: CO2 fixation in photosynthesis

CO2 fixation in photosynthesis takes place during the Calvin cycle. For every CO2 fixed to make glyceraldehyde-3-phosphate molecules that are used as building blocks for hexose sugars, 3 ATP and 2 NADPH are required. These ATP and NADPH molecules that are required in the Calvin cycle are synthesized in the light reaction phase of photosynthesis.


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