Light Dependent Reaction Flashcards
What is photoionisation?
The fluorescence of red light due that causes electrons to leave some of the chlorophyll.
What is the electron transfer chain?
A series of electron carriers that move electrons along a chain.
What occurs when light strikes a chlorophyll molecule?
Photoionisation. Two electrons are passed to an electron carrier.
What occurs after electrons leave the chlorophyll?
They’re passed along the transfer chain.
What happens to electrons as they move from carriers?
Energy
What is this energy used for?
ATP production.
What is photolysis?
The breakdown of water to release water, electrons and oxygen.
What replaces electrons lost during photoionisation?
Electrons from photolysis.
What happens after photoionisation occurs again?
Two electrons leave again and are passed onto another electron transfer chain.
How are these electrons used to reduce NADP?
They’re used with protons to reduce NADP.
What happens to the protons from photolysis?
They’re used to reduce NADP and produce ATP.
How do protons produce ATP?
Protons are transported from the stroma into the intermembranal thylakoid space and back, diffusing through molecules of ATP synthase.
