Diffusion is the process in which the particles are uniformly distributed or at equilibrium, and the process of random movement toward a state of equilibrium. In diffusion, motions are uniquely at random can produce a net mevement-always a direction from a diffusion of water from high concentration to low concentration through a selectively permeable membrane. This process of diffusion of water is a passive process, meaning without any use of energy. Diffusion is imperative for the distribution of ion and other solutes within a cell. Small molecules and ions may move from one end of an organelle to another in a fraction of a millisecond, or from the center of a cell to its surface almost as fast.
Solute concentration is related to osmotic pressure.
Greater the solute concentration, greater the osmotic pressure, and greater the tendency to absorb water. A solution with a higher concentration of solutes. The solution with lower solute concentration. The solutions containing equal concentrations of solutes. Utilizes membrane protein to allow charged molecules to freely diffuse in and out of the cell.