A bilipid layer is most permeable to
I. Lipid bilayer is impermeable to most water soluble molecules.
II. Lipid soluble molecules readily enter the cells
III. Molecules that move rapidly through a given membrane (lipid bilayer) are said to have a high Permeability
IV. coefficient: - as follows
Fig.: Permeability coefficients of water, some ions, and other small molecules in lipid bilayer membranes.
Molecules that move rapidly through a given membrane are said to have high permeability coefficient.
Now it is clear from above that, urea is more permeable > Glucose> K+> Na+