Diffusion Substances move from a high to a lower concentration down a concentration gradient Carbon dioxide, oxygen, water, food substances, wastes, eg urea No Osmosis Water moves from a high to a ...
Factor Surface area of the cell membrane separating the different regions Effect on diffusion The greater the surface area, the faster the rate of diffusion. Simple organisms therefore take in ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback