Aerobic system

Question 1

Describe the aerobic system

Answer 1

1. Aerobic reaction
2. Glycogen is the fuel used
3. Sarcoplasm, matrix of the mitochondria, cristae of the mitochondria are the sites of reaction
4. Phosphofructokinase and Acetyl-CoA are controlling enzymes
5. 38 moles of ATP are produced
6. Low-moderate intensity
7. Lasts from 3 minutes onwards

Question 2

What are the specific stages of the aerobic system?

Answer 2

Stage 1: glycolysis

• Glucose is broken down by controlling enzymes to produce 2 ATP and acetyl coenzyme A
• Occurs in sarcoplasm

Stage 2: Krebs cycle

• Acetyl coenzyme A is then utilized within the Krebs cycle to produce several major products such as citric acid which drives the formation of 2 ATP as well as CO2 but this is exhaled
• Occurs in matrix of mitochondria

Stage 3: electron transport train

• Hydrogen from the Krebs cycle is then used in the electron transport train to produce water and 34 ATP
• Occurs in the cristae of the mitochondria.

Question 3

What is the equation for the aerobic system?

Answer 3

C6 H12 O6 + 6O2 –> 6CO2 + 6H2O + energy

Question 4

What are the advantages of the aerobic system?

Answer 4

1. Large fuels: triglycerides, FFA’s, glycogen
2. High ATP yield and long duration of energy production
3. No fatiguing by-products.

Question 5

What are the disadvantages of the aerobic system?

Answer 5

1. Delay for oxygen delivery and complex series of reactions

2. Slow energy production limits activity to sub-maximal intensity.