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Energy Systems, Exercise Response, and Nutrition

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Energy Systems, Exercise Response, and Nutrition

Choose one answer for each multiple-choice question. For the select-all question, choose every correct option. Write short answers in the spaces provided.

Energy Systems and Exercise Response

1.What is ATP’s immediate role when a muscle contracts during exercise?

It supplies energy for muscle contraction
It stores oxygen in the lungs
It removes heat through the skin
It carries nutrients from the stomach

2.A sprinter accelerates for about five seconds. Which energy system supplies most of the energy for this burst?

Aerobic system
ATP-PC system
Anaerobic glycolysis system
Digestive system

3.Which energy system uses oxygen to help sustain activity over a longer duration?

ATP-PC system
Anaerobic glycolysis system
Aerobic system
Nervous system

4.Which change can normally occur in body temperature during exercise?

It may increase
It always falls below resting temperature
It stays exactly the same
It stops being regulated

5.Select all the usual responses that may occur as exercise intensity increases.

Heart rate increases
Breathing rate increases
Sweating increases
Blood flow to working muscles decreases

6.Explain how increases in heart rate and breathing rate help the body meet the demands of exercise.

7.Compare aerobic and anaerobic energy production. Include oxygen use and the kinds of activity each can support.

8.Match each nutrient with its main role. Use each letter once.

Carbohydrates
Protein
Fats
Water

B. Helps regulate temperature and replace fluid
D. Provides stored energy and supports body functions
C. Provides readily available energy for exercise
A. Supports tissue repair and growth

9.Suggest one suitable food or drink to have before training and explain how it could help.

10.After a 35-minute training session, Maia feels hot and thirsty. Name two appropriate recovery actions and explain how one of them helps.

Apply Your Knowledge

11.A netball player completes repeated short, fast sprints with brief rests. Which energy system is likely to contribute strongly during each sprint, and why?

12.During a steady 20-minute cycle, which energy system is likely to supply most of the energy? Give one reason for your choice.

13.Describe one way sweating helps the body during exercise and one step a person can take to manage fluid loss afterwards.