Simple diffusion and passive transport

simple diffusion  Discover what the process of diffusion is and how substances move from an area of high concentration to lower concentration in this Chemistry Bitesize First, diffusion equations will be derived for cases not involving a binding receptor The equation will show the rate of diffusion of a solute

One way facilitated diffusion functions is to move molecules across the cell membrane by using channel proteins These proteins are embedded in the plasma Solutes that cross the membrane by simple diffusion tend to be hydrophobic Examples of substances that cross the membrane by simple diffusion are the gasses

Diffusion Cell membranes are selectively permeable This means that they allow the movement of some molecules freely across them, but do not allow the free Movement of waste materials · In animals, the removal of waste materials occurs via simple diffusion · In the liver, waste material, urea, is