Plz help asap! What is the best explanation of how the fluid mosaic model helps explain the selective permeability of cell membranes?
Cholesterol embedded in the phospholipid bilayer allows passage of certain molecules.
The phospholipids are flexible and can slide past one another, allowing small gaps that molecules can penetrate.
The phospholipid bilayer allows osmosis while preventing diffusion of H2O molecules.
The phospholipid bilayer provides the cell's protection, while embedded proteins allow passage of some molecules.
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