Anaerobic energy systems (year 2) Flashcards
1
Q
what are the metabolic pathways?
A
1) ATP-PC system
2) Glycolysis
3) Krebs Cycle
4) Electron Transport Chain
2
Q
ATP-PC system
A
The body does not store enough ATP for exercise
- The ATP-PC system replenishes ATP rapidly!
- Creatinekinase reaction to maintain the concentration of ATP.
3
Q
Glycolysis, what is it?
A
Energy investment stage (-2 ATP)
•Energy generation stage (+4 ATP)
increase in H in pyruvate leads to lactate (increases acidity)
breakdown of glucose/glycogen (6 carbons)
4
Q
what are the start and end material of glycolysis?
A
Start: Glucose, NAD+
End: 2x pyruvate
2x ATP
2x NADH
5
Q
Fast vs slow glycolysis:
A
- In slow glycolysis, pyruvate was produced as an end product and entered the mitochondria
- In fast glycolysis, NADH production exceeds the cell’s capacity to shuttle away;
- Lactate dehydrogenase (LDH) permits continuation of glycolysis by accepting H+
6
Q
what happens to power after certain amount of time?
A
power reduces
No PC stores
increase in H leads to acidity and fatigue
no anaerobic stores.
