B2.3.6—Surface area-to-volume ratios Topic Practice
B2.3.6—Surface area-to-volume ratios Topic Practice
Practise explaining and calculating how surface area-to-volume ratio changes as cells grow and why this limits cell size.
How this is tested
- explain why exchange rate depends on surface area while demand rises with volume
- interpret graphs showing how SA:V ratio changes as cell diameter increases
- apply SA:V ratios to predict rates of osmosis, gas exchange or waste removal