Calvin Cycle Flashcards
What happens during carbon fixation?
3 carbon dioxide molecules react with 3 RuBP molecules and water to form 6 3-phosphoglycerate mollecules
What are the three phases that the calvin cycle can be divided into
Fixation reduction and regeneration
What happens during the reduction phase of the Calvin cycle?
The 3-phosphoglycerate molecules undergo redox reactions. First 6 Atp are added to phosphorylate the 3-phosphoglycerate molecule. Next the high energy electrons in 6NADPH molecules reduces the 3-phosphoglycerate forming 6G3P.
Of the 6 G3P molecules that are produced, how many are actually useful for making glucose?
1
What happens during the regeneration phase?
The 5 remaining g3p molecules get phosphorylated by 3atp and water producing 3 more RUBP molecules which can then be used to restart the cycle.
How many turns of the Calvin cycle does it take to make that 1 good G3P molecule?
3 because there are 3 carbon dioxide molecules to begin the cycle.
How are the Krebs cycle and the Calvin cycle similar
They both begin and end with the same molecule.
In the krebs cycle it begins with Acetyl CoA which gets regenerated in the end
In the Calvin cycle RUBP is used to start the reaction and them it gets regenerated in the end
Where does the calvin cycle take place?
The stroma
