Flashcards in Electron Transport Chain Deck (12):
What does the electron transport chain control the fate of?
Nadh and fadh2 from the cac
-this is where it is "cashed in"
What is the final destination of the electrons cashed into the electron transport chain?
To oxygen -converts oxygen to water
Nad and fad (oxidations)
-the electrons are pumped into electron transport chain
-it also pumps protons across the membrane
[H+] in the intermembrane space vs mitochondrisl mstrix
Intermembrane space has high [H+]
Mitochondrial matrix has low [H+]
Where does the electron transport chain take place
In the inner mitochondrial membrane
Where are the protons pumped?
Out of the matrix and into the intermembrane space
-higher pH means more basic
-matrix has a higher pH (lower H+concentration)
-intermembrane space has a lower pH (higher H+ concentration)
Four major complex involved
-nadh hands his electrons off to complex 1
----- converts him to nad
-complex 1 hands them to a carrier COENZYME Q (aka ubiquinone)
-coenzyme Q hands the electrons to complex 3
-Complex 3 gives the electrons to a carrier CYTOCHROME C
-cytochrome c gives electrons to complex 4
-complex 4 gives electrons to oxygen and makes h2o
Which complex is involved in the pumping of protons?
Complex 1, 3 and 4
Gives his electrons to complex 2
-complex 2 hands them to coQ and so on
Which way would protons spontaneously flow?
-from the intermembrane space to the matrix
-from a higher concentration to a lower
-this causes adp to rotate converting adp into atp