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Water Potential

TermDefinition
Solute Substance being dissolved
Solvent The substance in which the solute dissolves
Isotonic solution Same concentration of solutes compared to another solution. No net movement
Hypertonic solution Higher concentration of solutes compared to another solution. Plants - plasmolysed, animals - crenation
Hypotonic solution Lower concentration compared to another solution. Plants - turgid, RBCs - hemolysis
Water potential Water Potential (ψw) - Solute Potential (ψs) + Pressure Potential (ψp). Pure water at 20°C has a water potential of 0 kPa.
Solute potential As solute is added to water, solute potential decreases. Increasing solute concentration of a solution decreases the solution's solute potential.
Pressure potential Results from turgor pressure exerted by a cell wall on water in a cell. Usually +ve.
Created by: study_pinky
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