3.2 Osmosis
- Syllabus
- 0610–2026–2027
- Topic
- 3.2
- Level
- —
3.2.1—Water as a solvent
- Describe the role of water as a solvent in organisms with reference to digestion, excretion and transport
3.2.2—Water diffuses through partially
- State that water diffuses through partially permeable membranes by osmosis
3.2.3—Osmosis through cell membranes
- State that water moves into and out of cells by osmosis through the cell membrane
3.2.4—Osmosis using materials such
- Investigate osmosis using materials such as dialysis tubing
3.2.5—Effects on plant tissues of immersing
- Investigate and describe the effects on plant tissues of immersing them in solutions of different concentrations
3.2.6—Plants are supported by the pressure
- State that plants are supported by the pressure of water inside the cells pressing outwards on the cell wall
3.2.7—Osmosis as the net movement of water
- Describe osmosis as the net movement of water molecules from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution), through a partially permeable membrane
3.2.8—Effects on plant cells of immersing
- Explain the effects on plant cells of immersing them in solutions of different concentrations by using the terms: turgid, turgor pressure, plasmolysis, flaccid
3.2.9—Importance of water potential
- Explain the importance of water potential and osmosis in the uptake and loss of water by organisms
Objective notes
9 learning objectivesConceptIGCSE Biology