(Dr. McLachlin) (Unit B) Topic Note 11

Question 1

Net Reactions:

Complex I and Complex II

Answer 1

Reactants:
* 2 NADH
* 2 Q
* 10 H+ (matrix)

Products:
* 2 NAD+
* 2 QH2
* 8 H+ (intermembrane space)

Question 2

Net Reactions:

Complex III

Answer 2

Reactants:
* 2 QH2
* 4 cytochrome c (oxidized)
* 4 H+ (matrix)

Products:
* 2 Q
* 4 cytochrome c (reduced)
* 8 H+ (intermembrane space)

Question 3

Net Reactions:

Complex IV

Answer 3

Reactants:
* 4 cytochrome c (reduced)
* O2
* 8 H+ (matrix)

Products:
* 4 cytochrome c (oxidized)
* 2 H2O
* 4 H+ (intermembrane space)

Question 4

Net Reactions:

Electron Transport Chain (ETC)

Answer 4

Reactants:
* 2 NADH
* O2
* 22 H+ (matrix)

Products:
* 2 NAD+
* 2 H2O
* 20 H+ (intermembrane space)

Question 5

What are the components of the electron transport chain?

Answer 5

1. Complex I
2. Complex II
3. Complex III
4. Cytochrome C
5. Complex IV

Question 6

How many protons get pumped with the oxidation of:
* 1 NADH
* 1 QH2

Answer 6

• NADH: 10 protons
• QH2: 6 protons

Question 7

Net Reactions:

ATP Synthase

Answer 7

Reactants:
* 3 ADP
* 3Pi
* 8 H+ (intermembrane space)

Products:
* 3 ATP
* 3 H2O
* 8 H+ (matrix)

Question 8

How much ATP is produced from Glucose to ETC?

Answer 8

32 ATP

Question 9

How much ATP is produced in each component from Glucose to ETC?

Answer 9

• Glycolysis: 7 ATP
• Pyruvate decarboxylation: 5 ATP
• CAC: 20 ATP