GCSE Biology – More inspired and expired air

Last updated: 20/07/2020
GCSE Science CIE – Combined science extended Gas exchange and respiration GCSE Biology – More inspired and expired air

Learning Objectives

-I can explain the differences between inspired and expired air

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  1. What is inspired air?

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  2. What is expired air?

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  3. How much oxygen is air made up from?

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  4. How much carbon dioxide is air made up from?

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  5. What percentage of oxygen is inspired air?

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  6. What percentage of oxygen is expired air?

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  7. What percentage of carbon dioxide is inspired air?

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  8. What percentage of carbon dioxide is expired air?

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  9. What percentage of nitrogen is inspired air?

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  10. What percentage of nitrogen is expired air?

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  11. Why is there a difference between the composition of inspired and expired oxygen?

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  12. Why is there a difference between the composition of inspired and expired carbon dioxide?

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  13. Why is there a difference between the composition of inspired and expired water vapour?

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  14. Why is there no difference between the composition of inspired and expired nitrogen?

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  15. Why is there no difference between the composition of inspired and expired nitrogen?

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