- Remind pupils of earlier work and review their understanding of the reaction in the cells between oxygen and glucose. Ask them to think about what happens if the blood cannot supply enough oxygen for the cell's needs,
eg during intense physical activity.
- Ask them about their own experiences and illustrate,
eg with video clips of athletics. Ask pupils about the meaning of the word 'aerobic' and why aerobics in relation to exercise is so called.
- Extend to other situations where there may be a reduced oxygen supply,
eg through illness, mountaineering. Reinforce the idea that carbon dioxide and water, as well as energy, are released from aerobic respiration and that carbon dioxide is removed from the cells in the bloodstream.
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- state that oxygen is needed for cellular aerobic respiration
- describe some effects on the body of an inadequate oxygen supply
- state that carbon dioxide and water are products of respiration
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