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MIDDLE SCHOOL

Life Science

Structure, Function, and Information Processing

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Structure, Function, and Information Processing: Cell Membrane and Transport

Osmosis

Description

Osmosis

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration (fewer dissolved substances) to an area of high solute concentration (more dissolved substances). In this process, water is the solvent, which moves to balance the concentration of solutes, su...

Transcript

Do you know why raisins swell when soaked in water or plants stand tall after watering? It’s all because of osmosis!

It is the diffusion of water molecules across a membrane, flowing from a less concentrated solution to a more concentrated one.

In a hypotonic solution, like plain water, there is less dissolved material outside the ra...

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