IB Biology HL B3.1.1 Gas exchange as vital function
IB Biology HL B3.1.1 Gas exchange as vital function
Practise why organisms need gas exchange, linking oxygen uptake, CO2 removal, aerobic respiration, exercise and ventilation demand.
How this is tested
- distinguish ventilation, gas exchange and cell respiration in structured responses
- explain why exercise raises tidal volume, oxygen demand and CO2 removal
- link diffusion across membranes to oxygen uptake and carbon dioxide release