How do our cells get energy

This is an activity for a Year 7 science class to introduce respiration in cells.

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How do our cells get energy

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This is an activity for a Year 7 science class to introduce respiration in cells.
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Slide Content
  1. How do our cells get energy?

    Slide 1 - How do our cells get energy?

    • Year 7 science
  2. What you will learn

    Slide 2 - What you will learn

    • By the end of this activity, you will be able to:
    • give the meaning for respiration
    • identify what is needed for respiration
    • identify what is released for respiration
    • describe what respiration does for cells
    • write the equation for respiration
  3. Respiration

    Slide 3 - Respiration

    • All organisms (living things) need a constant supply of energy.
    • This energy comes from food.
    • When food is digested or broken down, it becomes glucose.
    • Energy is released when glucose is combined with oxygen.
    • In the cells of organisms, glucose and oxygen combines to release energy. Water and carbon dioxide are also released.
    • This process is called respiration.
    • glucose
    • oxygen
    • energy
    • carbon dioxide
    • water
  4. What is the role of respiration

    Slide 4 - What is the role of respiration

    • Respiration provides cells with the energy they need to carry out their activities.
    • For example, the energy from respiration allows:
    • a nerve cell to carry electrical messages around the body
    • a heart cell to continue beating
    • a white blood cell to fight germs
    • Respiration gives cells the energy to keep an organism alive.
  5. Equation for respiration

    Slide 5 - Equation for respiration

    • In science, respiration can be represented by an equation.
    • Instead of writing ‘When glucose is combined with oxygen, it releases energy, carbon dioxide and water’, we can write an equation instead.
    • glucose + oxygen  energy + carbon dioxide + water
  6. Test your understanding of respiration – Q1

    Slide 6 - Test your understanding of respiration – Q1

  7. Test your understanding of respiration – Q2

    Slide 7 - Test your understanding of respiration – Q2

  8. Test your understanding of respiration – Q3

    Slide 8 - Test your understanding of respiration – Q3

  9. Test your understanding of respiration – Q4

    Slide 9 - Test your understanding of respiration – Q4

  10. Test your understanding of respiration – Q5

    Slide 10 - Test your understanding of respiration – Q5