Biology A-Level
Phospholipid bilayer permeability
What Phospholipid bilayer permeability means in Biology A-Level, as defined for OCR.
Definition of Phospholipid bilayer permeability
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Reference: OCR
Small non-polar molecules such as oxygen and carbon dioxide diffuse directly through the phospholipid bilayer down a concentration gradient, while ions and polar molecules cannot pass freely through the hydrophobic core.
Topics that use Phospholipid bilayer permeability
- 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 Phospholipid bilayer permeability in the exam
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