Cycles Products and Reactants

Question 1

Glycolysis reactants

Answer 1

glucose, 2 ATP, 2 NAD+

Question 2

Glycolysis products

Answer 2

2 pyruvate, 4 ATP, 2 NADH

(net 2 ATP)

Question 3

2 NADH in glycolysis are produced in what step:

Answer 3

Step 6: Glucose 3 phosphate to 1,3 Biphosphoglycerate (dehydrogenase)

Question 3

2 ATP in glucolysis are invested in what steps:

Answer 3

Step 1: glucose to glucose 6 phosphate (hexokinase)
Step 3: fructose 6 phosphate to fructose 1,6 biphosphate (PFK)

Question 4

4 ATP produced in glycolysis are produced in what steps:

Answer 4

Step 7: 1,3 Biphosphoglycerate to 3 Phosphoglycerate
Step 10: PEP to pyruvate (pyruvate kinase)

Question 5

Pyruvate dehydrogenase complex reactants

Answer 5

Pyruvate, NAD+, CoA

Question 6

Pyruvate dehydrogenase complex products

Answer 6

Acetyl CoA, NADH, CO2

Question 7

Step 1 of pyruvate dehydrogenase complex

Answer 7

Decarboxylation
Catalyzed by E1
pyruvate + carbanion ion TPP to hydroxyethyl TPP and CO2

Question 8

Step 2 of pyruvate dehydrogenase complex

Answer 8

Oxidation
Catalyzed by E1/E2
hydroexyethyl TPP + reduced lipoamide to acetyl lipoamide

Question 9

Step 3 of pyruvate dehydrogenase complex

Answer 9

Catalyzed by E2/E3
acetyl lipoamide and COA to acetyl CoA and NADH

Question 9

Reactants of Citric Acid Cycle

Answer 9

Acetyl CoA, 3NAD+, FADH, ADP + Pi, 2H20

Question 10

Products of Citric Acid Cycle

Answer 10

2 CO2, 3 NADH, FADH2, ATP, CoA, 2H+

Question 11

What steps of Citric Acid Cycle produce NADH?

Answer 11

Step 3: Isocitrate to alphaketoglutarate (isocitrate dehydrogenase)
Step 4: Alphaketoglutarate to succinyl CoA (alphaketoglutarate dehydrogenase complex)
Step 8: maltate to oxaloacetate (maltate dehydrogenase)

Question 12

What step of Citric Acid cycle produces FADH2?

Answer 12

Step 6: Succinate to furmate (succinate dehydrogenase)

Question 13

What step of Citric Acid cycle produces ATP?

Answer 13

Step 5: Succinyl Coa to Succinate (succinyl CoA synthase)
Substrate level phosphorylation

Question 14

Reactants of Gluconeogenesis

Answer 14

2 pyruvate, 4 ATP, 2 GTP, 2 NADH

Question 15

Products of Gluconeogenesis

Answer 15

glucose, 4 ADP, 2 GDP, 2 NAD+

Question 16

2 GTP invested in gluconeogenesis in steps:

Answer 16

Oxaloacetate to Phosphoenol pyruvate (PEP carboxykinase)

Question 17

4 ATP invested in gluconeogenesis in steps

Answer 17

Pyruvate to oxaloacetate (pyruvate carboxylase in mitochondria)
3 Phosphoglycerate to 1,3 Biphosphoglycerate

Question 18

NADH invested in gluconeogenesis in step:

Answer 18

1,3 Biphosphoglycerate to glucose 3 phosphate

Question 19

Glyoxylate cycle reactants

Answer 19

2 acetyl CoA (inputs 4 carbons), NAD+, 2H20

Question 20

Glyoxylate cycle products

Answer 20

Succinate, CoASH, NADH, 2H+
NO GLUOCOSE!