1. The light independent reaction takes place in the...
This is so that...
The reaction needs supplies of ...., .... and ....
The reaction produces ... and ...
The reaction is not light dependent but it is ... dependent because it relies on ...
Now...
Write a full list of limiting factors.
Explain each limiting factor in terms of the light dependent and light independent reactions.

2. Photosynthesis (Part 2)

3. Light Independent stage
Energy from ATP, hydrogens and electrons from reduced NADP are used to reduce carbon dioxide to produce carbohydrate.
This happens in the stroma.

4. Light independent stage
Reduced NADP
NADP
light independent reaction
Carbon dioxide
glucose
ATP
ADP + Pi

5. 2X Glycerate-3-Phosphate
Ribulose Biphosphate
CO2
(1C)
ATP
2X Glycerate-3-Phosphate
(3C)
NADPH
ATP
2X Triose Phosphate
(3C)
(6C)
Glucose

6. What happens without light?
Which stages can still continue when the light is turned off?
Which molecules will build up when the light is turned off?

7. Exam question
Suggest why after the light was switched off the amount of GP...
a) Increased immediately
b) levelled out after a time

8. Sketch the curve to show what happens to the amount of RuBP after the light has been switched off,
Explain your answer.
Sketch what would happen if CO2 was removed with the light left on.

9. The light dependent reaction takes place on the...
This is so that...
The reaction needs ...., ...., .... and ....
The reaction produces .... and ...
.... is also produced.
The ... and ...pass into the ... for the second stage in photosynthesis.