Chapter 20: Electron Transport Chain

Question 1

What does the Electron Transport Chain do?

Answer 1

Uses reduced NADH and FADH2 to power electron transport across the mitochondrial inner membrane

Question 2

overall reaction:
malate + NAD+ —> oxaloacetate + NADH + H+

What is the oxidation half reaction in this?

Answer 2

malate —> oxaloacetate + 2H+ +2e-

Question 3

overall reaction:
malate + NAD+ —> oxaloacetate + NADH + H+

What is the reduction half reaction in this?

Answer 3

NAD+ + H+ +2e- —> NADH

Question 4

What molarity is everything at in E0?

Answer 4

sample cell: 1M malate
1M oxaloacetate
1M H+
standard reference cell: 1atm H2
1M H+ (ph 0)

Question 5

What molarity is everything at in E0’?

Answer 5

sample cell: 1M malate
1M oxaloacetate
10^-7 M H+ (ph 7)
standard reference cell: 1atm H2
1M H+ (ph 0 )