Question

Describe how diffusion distance, SA, volume and SA:Vol ratio vary with increasing organism size.

Accepted Answer

As organisms get larger:Diffusion distances get bigger - there will be more cells between teh surface of organism and the inner cellsSurface area gets larger but volume grows quicker so the SA:Vol ratio decraeses meaning slower diffusion & bigger diffusion distances

Front	Describe how diffusion distance, SA, volume and SA:Vol ratio vary with increasing organism size.
Back	As organisms get larger: Diffusion distances get bigger - there will be more cells between teh surface of organism and the inner cells Surface area gets larger but volume grows quicker so the SA:Vol ratio decraeses meaning slower diffusion & bigger diffusion distances

Diffusion Volume Sa:Vol Ratio Organism Distances Bigger Cells