The effects of exercise on the human body

12 questions

1. We breathe air into our ___.
2. True or false. Cellular respiration takes place in the nucleus.
3. Which image shows a mitochondrion?
4. Which type of muscle is found in the heart?
5. We need ___ from the air and glucose from our food to provide cells with the fuels for respiration.
6. True or false. Muscle cells need energy to contract and relax.
7. Which of these activities would be classed as an exercise?
8. How much exercise should a child or young person aim to complete each day?
9. Physical activity can improve your ___ strength, including your heart.
10. How can physical activity also improve your mental health?
11. Breathing rate is the number of breaths per ...
12. Why does our heart rate increase when we exercise?

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