GEOLOGY

Detailed explanation-1: -Water moves across cell membranes by diffusion, in a process known as osmosis. Osmosis refers specifically to the movement of water across a semipermeable membrane, with the solvent (water, for example) moving from an area of low solute (dissolved material) concentration to an area of high solute concentration.

Detailed explanation-2: -Lesson Summary. Semipermeable membranes are thin biological sheets of material that allow certain molecules to pass through them more easily than others. The molecules tend to move from areas of high concentration to areas of low concentration-a process called diffusion.

Detailed explanation-3: -A semipermeable membrane may also be known as a partially permeable membrane or a deferentially permeable membrane.

Detailed explanation-4: -A semipermeable membrane is a thin membrane that will pass certain small molecules, but not others. A thin sheet of cellophane, for example, acts as a semipermeable membrane.