CAIE IGCSE Biology 3.2.7 Definition of Osmosis
Practise stating the complete osmosis definition and comparing water-potential values to direct net water movement through a partially permeable membrane.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- define osmosis as net water movement from higher to lower water potential
- include water molecules and a partially permeable membrane when writing the full definition
- compare numerical water potentials and direct each arrow towards the more negative value
3.2.7—Osmosis as the net movement of water question 1
[Maximum number: 3]
Some students investigated osmosis in raw potato sticks.
Define the term osmosis.
movement/diffusion, of water (molecules) ;
from high water potential to low water potential/down water potential
gradient ; across a partially permeable membrane ;
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