Biology A-Level
Water potential
What Water potential means in Biology A-Level, as defined for OCR.
Definitions of Water potential
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Reference: OCR
The tendency of water to move, measured in kPa, where pure water at atmospheric pressure is 0 kPa and solutions have negative values.
Measured in kilopascals (kPa); pure water has a water potential of 0 kPa, and solutions have negative values.
Topics that use Water potential
- Biological membranes (OCR A-Level)
Related terms
- Cell signalling and receptors
- Cholesterol
- Cholesterol and fatty-acid saturation
- Compartmentalisation within cells
- Control variables
- Fluid mosaic model
- glycoproteins and glycolipids
- Lysis and crenation in animal cells
Using Water potential in the exam
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