Electron transport chain

Question 1

If C-H bonds increase there is

Answer 1

Reduction

Question 2

If C-H bonds decrease and C-O bonds increase there is

Answer 2

Oxidation

Question 3

Where does the ETS take place?

Answer 3

Inner mitochondrial membrane

Question 4

What are the 2 electron carriers?

Answer 4

Cytochrome c, Coenzyme Q

Question 5

Where does NADH enter?

Answer 5

COmplex 1 = 2.5 ATP

Question 6

Where does succinate enter>

Answer 6

Complex 2, succinate dehydrogenase, FADH2 = 1.5 ATP

Question 7

How many ATP does the G3P/Wing muscle generate?

Answer 7

30

Question 8

How many ATP does mammalian tissue generate?

Answer 8

32

Question 9

What carrier does complex 3,4 use?

Answer 9

Cytochrome c

Question 10

How is free energy conserved in ETS?

Answer 10

H+ pumped in to Intermembrane space to create gradient

Question 11

Which complexes are in intramembrane space vs mitochondrial matrix?

Answer 11

Complex 1,2 intramembrane

Complex 3,4 mitochondrial matrix

Question 12

What carrier does complex 1,2 use

Answer 12

CoQ

Question 13

What is the proton motive force?

Answer 13

H+ from ETS funnel in to H+ channel which activates ATP synthase

Question 14

What do uncouplers do?

Answer 14

DIssociate oxidation from phosphorylation

H+ gradient detroyed, heat produced but no ATP

Hibernation

Question 15

What complex does not directly contribute to the H+ gradient?

Answer 15

Complex II

Question 16

Does the ETS produce H2O?

Answer 16

Yes

Question 17

Name an inhibitor for each complex

Answer 17

Complex 1: Barbiturates
Complex 2; Carboxin
Complex 3: Antimycin
Complex 4: Cyanide, CO
ATP Synthase: Oligomycin