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Do Now: Please complete your GIST summary that should have been done yesterday! Then make sure your journal is up to date.

Published byΘεόδουλος Καραβίας Modified over 5 years ago

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Presentation on theme: "Do Now: Please complete your GIST summary that should have been done yesterday! Then make sure your journal is up to date."— Presentation transcript:

1 Do Now: Please complete your GIST summary that should have been done yesterday! Then make sure your journal is up to date.

2 Complete the review

3 Explain how molecules move across a semi-permeable membrane.
Topic: Osmosis Explain how molecules move across a semi-permeable membrane.

4 Key Idea #1 Osmosis is the movement of water across a semi-permeable membrane.

5 Key Idea #2 Regulating water flow is important factor in maintaining homeostasis. Too much water could cause the cell to grow bigger & burst and not enough would cause the cell to shrink.

6 Key Idea #3 If two solutions are separated by a selectively permeable membrane that allows only water to diffuse across it, the solutes can not diffuse! Instead, water will diffuse to even out the concentrations.

7 Key Idea #4 KEY IDEA #4: The tonicity of the solution can affect a cell. The effect is different depending on if the concentration of the solution is isotonic, hypertonic, or hypotonic.

8 Cell will get bigger and possibly burst Cell will shrivel
Water moves in and out equally; cell is in equilibrium Cell will shrivel

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