Introduction and Shuttles

Question 1

The ETC is located where?

Answer 1

Inner mitochondrial membrane

Question 2

What is the purpose of the ETC?

Answer 2

To liberate energy that can be used to make ATP

Question 3

What is oxidized in ETC to liberate energy?

Answer 3

NADH and FADH2

Question 4

What is used to catalyze the oxidation process in ETC?

Answer 4

5 protein complexes

Question 5

What two ways are used to transport NADH to the mitochondrial membrane?

Answer 5

Glycerol -3-phosphate shuttle

Malate-aspartate shuttle

Question 6

Cytosolic oxaloacetate is reduced to what? By what?

Answer 6

Malate

NADH

Question 7

Malate enters the mitochondrion carrying what?

Answer 7

An electron

Question 8

Once inside it is oxidized to what? Regenerating what?

Answer 8

Oxaloacetate

NADH

Question 9

Oxaloacetate cannot cross the mitochondrial membrane it has to be converted to what?

Answer 9

aspartate

Question 10

Aspartame can cross the mitochondrial membrane and be converted back to what?

Answer 10

oxaloacetate

Question 11

Cytosolic DHAP is reduced to what? By what?

Answer 11

Glycerol 3-phosphate

NADH

Question 12

When glycerol-3-phosphate enters the mitochondrion it reacts with what?

Answer 12

FAD

Question 13

From the glycerol-3-phosphate shuttle what is generated? Where does it give up it’s electrons?

Answer 13

FADH2

Complex II