Light Independent Reaction (Q2) Flashcards
Other terms for light independent reaction
Calvin cycle, dark reactions
Where does the Calvin cycle take place?
Stroma
What is the goal of the Calvin cycle?
Use ATP and NADPH to reduce CO2 into sugar
Three main stages of the Calvin cycle
- Carbon fixation
- Reduction
- Regeneration
How does carbon dioxide enter the leaves?
Through leaf openings called the stomata
Three reactants of the Calvin cycle
- CO2
- ATP
- NADPH
Four products of the Calvin cycle
- ADP
- NADP+
- Pi (inorganic phosphate)
- G3P
Stage 1: _____ molecules of _____ are attached to _____ molecules of _____ with the help of the enzyme _____. This produces an unstable and short-lived _____. Because it is unstable, it splits into _____ molecules of _____ per CO2.
- 3
- CO2
- 3
- ribulose 1,5-bisphosphate (RuBP)
- RuBP carboxylase oxygenase
- 6-carbon intermediate
- 2
- 3-phosphoglycerate
Stage 2: Each _____ receives a phosphate group from _____ through the process of _____, producing _____.
Afterwards, _____ electrons from this product are reduced, producing _____ molecules of _____.
- 3-phosphoglycerate
- ATP
- phosphorylation
- 1,3-bisphosphoglycerate
- 2
- 6
- glyceraldehyde 3-phosphate
Stage 3: _____ molecules of _____ are rearranged into _____ molecules of _____. To do this, it spends _____ molecules of ATP.
- 5
- glyceraldehyde 3-phosphate
- 3
- RuBP
- 3
Per cycle, how many ATP are consumed?
9, 6 molecules during reduction and 3 molecules during regeneration
Per cycle, how many NADPH are consumed?
6
How many CO2 molecules are needed to produce one glucose molecule?
6
How many ATP are needed to produce one glucose molecule?
18
How many NADPH are needed to produce one glucose molecule?
12
