Osmosis

3.2

What the syllabus asks of you

Describe the role of water as a solvent in 7 Describe osmosis as the net movement of organisms with reference to digestion, excretion water molecules from a region of higher water and transport potential (dilute solution) to a region of lower
State that water diffuses through partially water potential (concentrated solution), through permeable membranes by osmosis a partially permeable membrane
State that water moves into and out of cells by osmosis through the cell membrane
Investigate osmosis using materials such as dialysis tubing
Investigate and describe the effects on plant 8 Explain the effects on plant cells of immersing tissues of immersing them in solutions of them in solutions of different concentrations different concentrations by using the terms: turgid, turgor pressure, plasmolysis, flaccid 9 Explain the importance of water potential and osmosis in the uptake and loss of water by organisms
State that plants are supported by the pressure of water inside the cells pressing outwards on the cell wall

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Chapter 3: Diffusion and osmosis

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