11.3 - Light-dependent Reaction Flashcards
Adaptations of thylakoids for the light-dependent reaction Stages of the light-dependent reaction
1
Q
Where does the light-dependent reaction occur?
A
Thylakoid membranes
2
Q
What are some adaptations of thylakoids?
A
- Large surface area - So they can contain more chlorophyll and electron carriers.
- ATP synthase channels- This allows the synthesis of ATP.
- Selectively permeable - This allows a proton gradient to be set up.
3
Q
What are the key stages of the light-dependent reaction?
A
Absorption of light energy
4
Q
What happens during photoionisation?
A
Electrons are excited and lost from pigments
5
Q
What happens to electrons in the electron transport chain?
A
They are passed along
6
Q
What is the equation for photolysis of water?
A
2H2O → 4H+ + 4e- + O2
7
Q
What happens during chemiosmosis?
A
Proton gradient is established
