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Flashcards in Electron Transport Chain Deck (12):
0

What does the electron transport chain control the fate of?

Nadh and fadh2 from the cac
-this is where it is "cashed in"

1

What is the final destination of the electrons cashed into the electron transport chain?

To oxygen -converts oxygen to water

2

Nadh->
Fadh2->

Nad and fad (oxidations)
-the electrons are pumped into electron transport chain
-it also pumps protons across the membrane

3

[H+] in the intermembrane space vs mitochondrisl mstrix

Intermembrane space has high [H+]
Mitochondrial matrix has low [H+]

4

Where does the electron transport chain take place

In the inner mitochondrial membrane

5

Where are the protons pumped?

Out of the matrix and into the intermembrane space

6

PH?

-higher pH means more basic
-matrix has a higher pH (lower H+concentration)
-intermembrane space has a lower pH (higher H+ concentration)

7

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

8

Which complex is involved in the pumping of protons?

Complex 1, 3 and 4

9

Fadh2

Gives his electrons to complex 2
-complex 2 hands them to coQ and so on

10

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

11

Who pumps more protons across? Nadh or fadh2

Theres three nadh so it has more
-nadh is worth more atp then fadh2 is