Question 6 The difference between osmosis and diffusion is that osmosis refers specifically to the movement of water, whereas diffusion refers to the movement of any type of molecules. diffusion is passive transport, whereas osmosis is active transport. Oonly diffusion refers to the movement of materials across a semipermeable membrane. 2 pts Oonly the process of osmosis varies according to the kinds of particles present. only in diffusion do molecules move from areas of high concentration to areas of low concentration. < < Previous Next