Exam 3: Metabolism- Citric Acid Cycle

Question 1

List the enzyme:

Citrate → Isocitrate

Answer 1

Aconitase

Question 2

List the enzyme:

Isocitrate → α-ketogluterate

Answer 2

Isocitrate dehydrogenase

Question 3

List the enzyme:

α-ketogluterate → Succinyl Co-A

Answer 3

α-ketogluterate dehydrogenase complex

Question 4

List the enzyme:

Succinyl Co-A → Succinate

Answer 4

Succinyl Co-A synthetase

Question 5

List the enzyme:

Succinate → Fumarate

Answer 5

Succinate dehydrogenase

Question 6

List the enzyme:

Fumarate → Malate

Answer 6

Fumarase

Question 7

List the enzyme:

Malate → Oxaloacetate

Answer 7

Malate Dehydrogenase

Question 8

What reaction does the enzyme Aconitase Catalyze?

Answer 8

Citrate → Isocitrate

Question 9

What reaction does the enzyme Isocitrate dehydrogenase Catalyze?

Answer 9

Isocitrate → α-ketogluterate

Question 10

What reaction does the enzyme α-ketogluterate dehydrogenase complex Catalyze?

Answer 10

α-ketogluterate → Succinyl Co-A

Question 11

What reaction does the enzyme Succinyl Co-A synthetase Catalyze?

Answer 11

Succinyl Co-A → Succinate

Question 12

What reaction does the enzyme succinate dehydrogenase Catalyze?

Answer 12

Succinate → Fumarate

Question 13

What reaction does the enzyme Fumarase Catalyze?

Answer 13

Fumarate → Malate

Question 14

What reaction does the enzyme Malate Dehydrogenase Catalyze?

Answer 14

Malate → Oxaloacetate

Question 15

What is generated in the Isocitrate → α-ketogluterate step?

Answer 15

NAD+ → NADH + H+

Question 16

What is generated in the α-ketogluterate → Succinyl Co-A step?

Answer 16

NAD+ + CoA → NADH + H+ + CO2

Question 17

What is generated in the Succinyl Co-A → Succinate step?

Answer 17

GDP + Pi → GTP + CoA ( this is the only energy producing step of the CAC!!!!

Question 18

What is generated in the Succinate → Fumarate step?

Answer 18

FAD → FADH2

Question 19

What is generated in the Malate → Oxaloacetate step?

Answer 19

NAD+ → NADH + H+