Carbohydrates 3 Flashcards Preview

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Flashcards in Carbohydrates 3 Deck (14)
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1
Q

Define glycolysis.

A

Complex series of chemical reactions, not requiring oxygen, that splits glucose, glycogen or other cells into pyruvate.

2
Q

What cell needs glycolysis for energy?

A

Red blood cells as they lack mitochondria.

3
Q

Step 1: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Glucose to Glucose-6-Phosphate
Hexokinase(glucokinase)
-1ATP
Irreversible

4
Q

Step 2: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Glucose-6-Phosphate to Fructose-6-Phosphate
Phosphohexose isomerase
N/a
Reversible

5
Q

Step 3: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Fructose-6-Phosphate to Fructose-1,6 -bisphosphate
Phosphofructokinase 1
-1ATP
Reversible (but first committed step)

6
Q

Step 4: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Fructose- 1,6 -bisphosphate to Dihydroxyacetone phosphate and glyceraldehyde 3-phosphate
Aldolase
N/A
Reversible

7
Q

Step 5: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Dihydroxyacetone phosphate to glyceraldehyde 3-phosphate
Triose phosphate isomerase
N/A
Reversible

8
Q

Step 6: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Glyceraldehyde 3-phosphate and Pi to 1,3 -bisphosphoglycerate
Glyceraldehyde 3-phosphate dehydrogenase
1 NADH
Reversible

9
Q

Step 7: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

1,3 -bisphosphoglycerate to 3-phosphoglycerate and ATP
Phosphoglycerate kinase
N/A
Reversible

10
Q

Step 8: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

3-phosphoglycerate to 2-phosphoglycerate
Phosphoglycerate mutase
N/A
Reversible

11
Q

Step 9: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

2-phosphoglycerate - phosphoenolpyruvate
Enolase
H20
Reversible

12
Q

Step 10: a. Making, b. Catalyst, c. Energy production, D. Reversible/Irreversible

A

Phosphoenolpyruvate to Pyruvate and ATP
Pyruvate kinase
1ATP
Irreversible

13
Q

NAD+ needs to be regenerated but what can it be made from?

A

The vitamin niacin.

14
Q

What 3 things can happen to pyruvate?

A

Pyruvate -> ethanol + CO2
Pyruvate -> lactate
Pyruvate -> Acetyl CoA -> CO2 + H2O