7.3 PATHWAY 1: ATP-PC (ANAEROBIC ALACTIC)

What is the ATP-PC system?

• A complex energy pathway that relies on the metabolism of glucose as an energy source
• A simple anaerobic energy pathway that relies on the action of phosphocreatine
• A system that produces energy aerobically with the aid of oxygen
• A system that is only used during endurance events

How long can the ATP-PC system provide energy for?

• 30-45 seconds
• 10-15 seconds
• 1-2 minutes
• 5-10 minutes

What is phosphocreatine?

• A compound that is not found in muscle
• A low-energy molecule that is difficult to break down
• A high-energy molecule that can be used to convert ADP back to ATP
• A waste product produced during the ATP-PC system

What is the chemical equation for the ATP-PC system?

• ATP → ADP + Pi + Energy
• ADP + Pi + Energy → ATP
• Glucose + Oxygen → Carbon Dioxide + Water + Energy
• None of the listed

In which types of sports does the ATP-PC system play an important role?

• Endurance events
• Team sports
• Power events
• Sports that require sustained moderate effort

Why is the ATP-PC system important in power events?

• It provides a sustained supply of ATP over a long period of time
• It produces energy aerobically with the aid of oxygen
• It provides a high rate of ATP re-synthesis that cannot be matched by other energy systems
• It relies on the metabolism of glucose as an energy source

After about how many seconds is the ATP produced by the ATP-PC system largely depleted?

• 30-45 seconds
• 10-15 seconds
• 1-2 minutes
• 5-10 minutes

What does the full replenishment of phosphocreatine require?

• Oxygen
• ATP
• Glucose
• Lactic acid

How long does it take for the full replenishment of phosphocreatine to occur?

• 2-5 seconds
• 2-5 minutes
• 10-15 seconds
• 30-45 seconds

What is the main source of ATP that is used to recombine phosphate and creatine during recovery?

• Phosphocreatine
• Glucose
• Oxygen
• Lactic acid