Lecture 12: carbohydrate metabolism Flashcards
1
Q
Is glycolysis an aerobic or anaerobic process?
A
Anaerobic
2
Q
Which steps of glycolysis are far from equilibrium reactions?
A
Step 1, 3, and 10
3
Q
What are the products of glycolysis per glucose molecule?
A
2 ATP
2 pyruvate
2 NADH
4
Q
What happens during step 1 of glycolysis?
A
hexokinase converts glucose to glucose-6-phosphate
5
Q
What happens during step 3 of glycolysis?
A
phosphofructokinase converts fructose-6-phosphate to fructose-1,6-bisphosphate
6
Q
What happens during step 5 of glycolysis?
A
dihydroxyacetone phosphate gets converted to glyceraldehyde-3-phosphate by triose phosphate isomerase
7
Q
What happens during step 10 of glycolysis?
A
pyruvate kinase coverts phosphoenolpyruvate to pyruvate
8
Q
Why does pyruvate also get converted to lactate during exercise?
A
- Pyruvate cannot get converted to acetyl coA at a fast enough rate
- pyruvate converted to lactate to regenerate NAD
