Anaerobic Glycolytic system

Question 1

What is the AGS also known as?

Answer 1

Anaerobic glycolysis

Question 2

When is the AGS used?

Answer 2

Maximal exercise that lasts around 60 secs, or 3 mins if the intensity is slightly reduced

Question 3

What is the AGS fuelled by?

Answer 3

Glycogen

Question 4

Where does the AGS take place?

Answer 4

Sarcoplasm

Question 5

Why is the AGS located here?

Answer 5

As it is nearby the ATP-PC system, which provides really quick access when ATP-PC runs out.

Question 6

What is the process of the AGS?

Answer 6

1. PCr stores run out
2. Alternative source needed - glycogen
3. Glycogen converted into G-6-P (Glycose 6 phosphate) by the enzyme phosphofructokinase (PFK)
4. 2 moles of ATP released (energy for mc)
5. Pyruvatic acid produced
6. In absence of oxygen, pyruvate is converted into Lactic acid by the enzyme lactate dehydrogenase (LDH)

Question 7

What does 1 mole of glycogen equate to in the AGS?

Answer 7

Two moles of ATP

Question 8

Give 3 advantages of the AGS

Answer 8

• Works in absence of oxygen
• Lactic acid converted back to glycogen through the cori cycle (in the liver)
• Lactic acid converted back to pyruvate when oxygen is present

Question 9

Give 3 disadvantages of the AGS

Answer 9

• Accumulation of lactic acid inhibits energy and denatures enzymes
• The accumulation of lactic acid means exercise must be reduced or stopped
• Only lasts 60 seconds maximally