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SingaporeSports ScienceQuick questions
Cardiovascular and Respiratory Systems
Quick questions on Gas exchange and breathing: O-Level Exercise and Sports Science
2short 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 the mechanics of breathing?Show answer
Breathing works by changing the volume of the chest, which changes the pressure inside the lungs.
What is gas exchange by diffusion?Show answer
Gas exchange at the alveoli happens by diffusion: gases move from where they are in high concentration to where they are in low concentration.
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