Lesson 7 - Electron Transport Chain

Question 1

Where does the electron transport chain take place?

Answer 1

Mitochondrial matrix, inter-membrane space, and inner mitochondrial membrane

Question 2

Names of the complexes involved in the electron transport chain

Answer 2

Complex I: NADH Dehydrogenase
Complex II: Succinate Dehydrogenase
Complex III: Ubiquinone-Cytochrome C Oxidoreductase
Complex IV: Cytochrome Oxidase
ATP Synthase

Cofactors
Coenzyme-Q (Ubiquinone)
Cytochrome C

Question 3

What is the final electron acceptor in the electron transport chain?

Answer 3

Oxygen

Question 4

How much does ATP does NADH and FADH2 produce?

Answer 4

1 NADH = 3 H+ = 3 ATP
1 FADH2 = 2 H+ = 2 ATP

Question 5

What is the final tally of ATP production after electron transport chain has been carried out?

Answer 5

TCA Cycle
6 NADH
2 FADH2
2 ATP

Transition Stage
2 NADH

Glycolysis
2 NADH

Total = 36 ATP (Aerobic)
+ 2 ATP (Anaerobic)

Grand total = 38 ATP