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GCSE Combined Science · key term
A measure of the tendency of water to move out of a solution. Adding dissolved solute lowers water potential; water moves by osmosis from higher to lower water potential.
Used by OCR
Specification B2.1a · Biology Paper 1
Revise: Cellular Transport MechanismsOsmosis is the net movement of water molecules through a partially permeable membrane from higher water potential to lower water potential. Like diffusion, it is passive.
An osmosis explanation should name water, a partially permeable membrane and movement from higher to lower water potential.
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