ATP Flashcards
(14 cards)
How does ATP provide energy when releasing it
Hydrolysis reaction takes place to break bonds between the last 2 phosphate molecules
Catalysed by ATP-ase
What is ATP broken down into
ADP + Pi
For each mol of ATP hydrolyse how much energy is released
34KJ
What is some energy lost as
Heat and in cell reactions
Define chemiosmosis
Flow of protons down an electrochemical concentration gradient across a selectively permeable membrane
What does oxidation do
Loses energy
What does reduction do
Gain energy
What do carrier proteins do
Release energy from electrons and use that energy to phosphorylate ADP into ATP
What are electron transport chains
A series of protien carriers on the inner membrane of mitoch9ndria and chloroplasts
What does ATP synthetase do
Phosphorylates ADP to form ATP
What is DCPIP
An artificial hydrogen acceptor that changes colour from dark blue to colourless when reduced
What is TCC
An artificial hydrogen acceptor that changes from, colourless to red when reduced
How is the proton gradient maintained during chemiosmosis
Potential energy associated with excited electrons is coupled to the active transport of H+ across the membrane by proton pumps
How can dehydrogenase activity in chloroplasts be investigated
Using artificial hydrogen acceptors such as DCPIP, methylene blue
