3.2 Photosynthesis Part B Flashcards
1
Q
Where do the reactions of the light dependent stage of photosynthesis take place?
A
In the thylakoids of the chloroplast. (In the thylakoid membranes & thylakoid cavity)
2
Q
What does the light dependent stage require?
A
Light & Water
3
Q
What is light energy turned into, and what is the bi-product?
A
It is turned into chemical energy in ATP and reduced NADP
Oxygen is the bi-product
4
Q
What is phosphorylation?
A
The addition of a phosphate ion to ADP to synthesise ATP
5
Q
What are the two photophosphorylation pathways?
A
Non-Cyclic photophosphorylation and Cyclic photophosphorylation.
6
Q
What is Non-cyclic photophosphorylation?
A
- It involves photosystems I and II
- Electrons travel across a linear pathway
7
Q
What is Cyclic photophosphorylation?
A
- Involves photosystem I only
- Electrons travel in a cyclic pathway, leaving PSI and returning to PSI
