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SingaporeBiologyQuick questions

Respiration and Gas Exchange

Quick questions on The human breathing system: N(A)-Level Biology Respiration and Gas Exchange

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Name the tiny air sacs in the lungs where gas exchange happens. [1 mark]
What is q2?
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State what happens to the diaphragm when you breathe in. [1 mark]
What is q3?
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Explain why air flows into the lungs when the chest gets bigger. [2 marks]

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