Biology Made Fun · Go Further

Watch It Move: Osmosis

A “Watch it move” animation for Biology Made Fun, Unit 5 — the code printed on page 57, Unit 5's Color & Learn three-cups page.

Animation — OsmosisThe concept animation for this page will be embedded here.

Key ideas from the lesson

  • Osmosis is the movement of water across the membrane toward the side with more dissolved material.
  • Put a cell in water with less dissolved material than the cell's inside and water rushes in — the cell swells.
  • Reverse the setup — more dissolved material outside — and water leaves, and the cell shrivels. The membrane controls the traffic either way.

Why this helps

This is the “Watch it move” companion to Unit 5's Color & Learn three-cups page: the three setups from the unit, running side by side.

Try this

For each cup, predict before it plays: which way does the water move, and what happens to the cell? Score yourself against what the animation shows.

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