Photosynthesis Flashcards
What absorbs light energy
Antenna pigments
How are electrons released in PS2
Photolysis
Where are electrons excited to
Phaeophytin
What is the phaeophytin
Primary electron acceptor
What’s the order the electrons are passed along from PS2 to PS1
Phaeophytin
Plastoquinone
Cytochrome complex
Plastocyanin
What are protons actively transported down
Plastoquinone
Which direction are protons actively transported
Stroma to thylakoid space
What catalyses the formation of NADPH
NADP Reductase
How many molecules of ATP to NADPH
2 ATP
3 NADPH
Where do the protons from photolysis go
To the lumen
What replaces the lost electrons from P700
Electrons from plastocyanin
What happens if there isn’t enough ATP compared to NADPH
electrons are diverted away from making NADPH back to plastoquinones in PS2
More protons are pumped into the lumen from photolysis
How are electrons returned to PS1
PS2 is done in reverse
Where is plastocyanin
PS1
Where is plastoquinone
PS2
What does rubisco stand for
Ribulose biphosphate carboxylase
How many reaction a second does rubisco process
3
What is half the protein in a leaf
Rubisco
What is the main product of the Calvin cycle
Glyceraldehyde 3 phosphate
Where is sucrose made in plants
Cytosol of palisade leaf cells
What is sucrose used for and why
Transportation around plants as it is soluble
Where is starch made
Stroma of chloroplast
What happens to starch
Metabolised at night to provide energy
