12.6 part 3 Flashcards
In oxidative phsophorylation, the reduced coenzymes that have been produced in the earlier stages of respiration are used to make:
ATP
Oxidative phosphorylation happens in the…
inner membrane of the mitochondria
Proteins on the inner membrane of the mitochondria are known as…
ATPases
1) Reduced coenzyme carries H+ and electron to …
electron transport chain on inner mitochondrial membrane
2) Electrons pass from one electron carrier to the next in a series of…
redox reactions: the carrier is reduced when it receives the electrons and oxidised when it passes them on
3) Protons (H+) move across the membrane into the..
inner mitochondrial membrane creating high H+ concentration
4) H+ diffuse back into the mitochondrial matrix down the…
electrochemical gradient
5) H+ diffusion allows ATPase to…
catalyse ATP synthesis
6) Electrons and H+ ions combine to form hydrogen atoms which then combine with oxygen to create water, if the supply of oxygen stops…
the ETC and ATP synthesis also stop
Oxygen is the…
final electron acceptor
Energy of the electrons is now stored in the form of a …
proton gradient across the inner membrane
The ATP synthase enzyme has a proton channel through it, and as the protons ‘fall down’ this channel their energy is used to make…
ATP
It takes 3 protons to..
synthesise 1 ATP molecule
This method of storing energy by creating a proton gradient across a membrane is called..
chemiosmosis
