Energy Systems Quiz

At the start of a 400m race, which energy system is predominantly supplying ATP?

• Aerobic system

• ATP-CP system

• Anaerobic glycolysis

• Oxidative phosphorylation

Approximately how long does the ATP-CP system remain the primary energy supplier in a 400m race?

• The entire race

• About 7 seconds

• 30 seconds

• 45 seconds

What is the main fuel source for the ATP-CP system?

• Glucose

• Glycogen

• Creatine phosphate

• Fatty acids

Why does anaerobic glycolysis become the predominant energy system after the initial seconds of the race?

• CP stores are depleted

• Oxygen uptake hasn't reached sufficient levels for aerobic system dominance

• Glycogen stores are fully available

• Both a and b

What is the primary fuel source for anaerobic glycolysis?

• Creatine phosphate

• Glycogen

• Fatty acids

• Amino acids

Which by-products are produced during anaerobic glycolysis that can lead to fatigue?

• Carbon dioxide and water

• Lactate and hydrogen ions

• Ammonia and urea

• Ketones and acetyl-CoA

At approximately what point in the 400m race does the aerobic system become the predominant ATP supplier?

• From the start

• After 7 seconds

• Around the 300m mark

• Only in the final sprint

Why is fat not a significant fuel source during a 400m race?

• The race is too short for fat metabolism to be activated

• Fat breakdown requires a long series of reactions

• The intensity is too high for efficient fat utilisation

• All of the above

Which energy system likely supplies the most total ATP throughout the entire 400m race?

• ATP-CP system

• Anaerobic glycolysis

• Aerobic system

• Equal contribution from all systems

Which statement about the ATP-CP system in a 400m race is correct?

• It remains the predominant system throughout the race

• It becomes a minor contributor after the initial seconds due to CP depletion

• It can be fully replenished during the race

• It produces more ATP than anaerobic glycolysis overall