OCR A level PE - Energy Systems Recap

What is ATP?

• A molecule that stores energy in its phosphate bonds

• A molecule that releases energy when broken down

• A molecule that is used to resynthesize glucose

• A molecule that is produced during aerobic exercise

Which enzyme catalyzes the breakdown of ATP?

• ATPase

• Creatine Kinase

• Lactate Dehydrogenase

• Phosphofructokinase

What is the energy currency of the body?

• ATP

• ADP

• PC

• Glucose

Which energy system is immediately available for resynthesis of ATP?

• ATP/PC

• Glycolytic

• Aerobic Glycolysis

• Krebs Cycle

How long can cellular ATP support exercise?

• 2-3 seconds

• 10 seconds

• 3 minutes

• 30 minutes

How long can ATP-PC System support exercise?

• 2-3 seconds

• 10 seconds

• 3 minutes

• 30 minutes

The enzyme involved in the pyruvic acid breakdown is without oxygen...

• GPP

• LDH

• PFK

• Creatine Kinase

What is the predominant energy system during moderate/high intensity exercise?

• ATP/PC

• Glycolytic

• Aerobic Glycolysis

• Krebs Cycle

What is the bi-product of the glycolytic system?

• Lactic Acid

• Carbon Dioxide

• Water

• ATP

Which energy system is predominant during endurance activities?

• ATP/PC

• Glycolytic

• Aerobic Glycolysis

• Krebs Cycle