CAIE IGCSE Biology 11.1.5 Effects of physical activity on
CAIE IGCSE Biology 11.1.5 Effects of physical activity on
Practise using graphs and investigations to describe how exercise changes breathing rate and depth over time.
How this is tested
- calculate breathing rate or volume per breath from spirometer-style graphs
- describe how rate and depth change after exercise or increased CO2 concentration
- write a testable hypothesis for measuring breathing rate before and after activity