LDR in Photosynthesis Flashcards
(20 cards)
What is the first step of LDR?
Photolysis of water
What is Photolysis?
Breaking something using light energy
What does 2H2O get split into?
4H+, 4e- and O2
One by one, the _______ from the (4___) goes to the _________ _________ located in Photosystem II
Electron, e-, Reaction Center
What happens to the e- once it reaches the Reaction Center 2?
It gets a backpack full of energy
Where does the e- with the energy backpack travel through?
It travels through the Cytochromes
What is the road of the electron’s journey called?
Electron Transport Chain
What happens to the e- once it arrives at the Hydrogen Pump?
The energy backpack gets unloaded
What happens after the e- unloads the backpack?
It goes to the Reaction Center 1, located in Photosystem 1
During the electron’s journey, what happens to the H+ inside the membrane?
They pile up and start exiting the membrane
How does the H+ exit the membrane?
They leave through the ATP Synthase
What is the gushing flow of H+ through the ATP Synthase called?
Chemiosmosis
What does the H+ chain ultimately help?
It helps convert ADP into ATP
What is the process of going from ADP –> ATP called?
Phosphorylation
Is Chemiosmosis passive or active transport?
Passive
What happens once a couple of H+ are floating outside in the stroma?
An NADP+ comes along and uses the H+ and 2 e- to turn into NADPH
What does the NADP+ convert to after reacting with H+?
NADPH
What are the ultimate products of LDR?
O2, 2NADPH, and ATP
What is/are the ultimate reactants of LDR?
Water and Light Energy
What is the main point of LDR?
To expel O2, and to provide 2NADPH along with ATP to trigger LIR
