Energy Systems | Edexcel A-Level Physical Education (9PE0)
Energy Systems
- 62 questions
- 4 subtopics
- Component 1: scientific principles of physical education
- Component 1
Energy Systems is examined in Component 1, Scientific principles of physical education.
It covers forms of energy and ATP, the ATP-PC and glycolytic systems, the aerobic system and fuel use and the energy continuum and priming exercise.
Sample questions from Energy Systems
Answer each one closed book first, then open the answer.
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Forms of energy and ATP
Where is electrical energy used in the body during exercise?
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Electrical energy carries nerve impulses from the brain to the muscles. Electrical impulses also spread through the heart's conduction system to trigger each beat. -
Forms of energy and ATP
What is meant by ATP resynthesis?
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ATP resynthesis is the rebuilding of ATP by rejoining ADP with a free phosphate. The reaction needs energy released from the breakdown of a fuel. -
The ATP-PC and glycolytic systems
Give two advantages of the ATP-PC system.
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The ATP-PC system resynthesises ATP very rapidly, so it supports maximal force. The system produces no fatiguing by-products. -
The ATP-PC and glycolytic systems
For how long is the glycolytic system the dominant energy provider?
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The glycolytic system dominates high-intensity efforts lasting from about 10 seconds up to two to three minutes. The system takes over as phosphocreatine runs low. -
The aerobic system and fuel use
What is beta-oxidation?
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Lipase first splits stored triglycerides into glycerol and free fatty acids. Beta-oxidation then breaks the fatty acids down into acetyl coenzyme A, which enters the Krebs cycle. -
The aerobic system and fuel use
Give two advantages of the aerobic system.
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The aerobic system produces a very large ATP yield from each molecule of fuel. The system can continue for hours without fatiguing by-products. -
The energy continuum and priming exercise
Where does the 800 m sit on the energy continuum?
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The 800 m sits near the middle of the continuum. The glycolytic and aerobic systems both make large contributions. -
The energy continuum and priming exercise
How does the length of recovery in an intermittent sport affect the energy systems used?
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Longer recoveries let phosphocreatine stores refill, so the ATP-PC system can power the next effort. Short recoveries force greater reliance on the glycolytic system.
The 4 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Forms of energy and ATP | Chemical, kinetic, potential, mechanical and electrical energy, the energy conversions in a pole vault and a sprint stride, ATP and its breakdown, how long muscle ATP lasts, ATP resynthesis, coupled reactions, and fat and glycogen as fuels. | 16 |
| The ATP-PC and glycolytic systems | Phosphocreatine and creatine kinase, the ATP-PC system's yield, duration, advantages and drawbacks, the stages of anaerobic glycolysis in the sarcoplasm, its net ATP yield and duration, what limits it, and the events that rely on each. | 16 |
| The aerobic system and fuel use | Pyruvic acid, the Krebs cycle and the electron transport chain, the total ATP yield, beta-oxidation of fat, the fuel mix by intensity, the respiratory exchange ratio, by-products, and the three pathways ranked by speed, amount and force. | 15 |
| The energy continuum and priming exercise | The energy continuum and thresholds, the 100 m, 200 m, 400 m, 800 m, 1500 m, 5,000 m and marathon, the football midfielder and intermittent recovery, and priming exercise and the timing of a sprinter's warm-up. | 15 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
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Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
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Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
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Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
Edexcel A-Level Physical Education Active Recall Guide
Every topic, not just this one. 2,108 questions with their answers.