Energy Systems (Recap)

What is the primary energy source used in the ATP-PC energy system?

• Glucose

• Fatty acids

• Phosphocreatine

• Amino acids

How long does the ATP-PC system typically provide energy during exercise?

• Up to 10-12 seconds

• 30-60 seconds

• 2-3 minutes

• More than 5 minutes

Is the ATP-PC system aerobic or anaerobic?

• Aerobic

• Anaerobic

• Both aerobic and anaerobic

• Neither aerobic nor anaerobic

What is the speed of ATP production in the ATP-PC system?

• Slow

• Moderate

• Rapid

• Very rapid

What are the limitations of the ATP-PC system?

• Produces large amounts of ATP

• Limited PC stores in the muscle

• Uses glucose as a fuel source

• Provides energy for long durations

What is the primary function of the lactic acid energy system in the body?

• To synthesize protein

• To resynthesize ATP anaerobically

• To increase oxygen supply

• To break down fats

Which compound (fuel) is directly used to resynthesize ATP in the lactic acid energy system?

• Lactate

• Pyruvate

• Glucose

• Glycogen

What is a by-product of the lactic acid energy system?

• Carbon dioxide

• Water

• Lactic acid

• Oxygen

During which condition is the lactic acid energy system primarily activated?

• During rest

• In the presence of ample oxygen

• Under insufficient oxygen conditions

• During light physical activity

What happens to pyruvate (glucose is converted to pyruvate through anaerobic glycolysis) when there is insufficient oxygen available during glycolysis (occurs in the lactic acid system)?

• It converts to glucose

• It converts to lactic acid

• It remains unchanged

• It converts to carbon dioxide