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According to widely accepted “fluid mosaic model” cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?
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- Proteins in cell membranes can travel within the lipid bilayer.
- Proteins can also undergo flip-flop movements in the lipid bilayer.
- Proteins can remain confined within certain domains of the membrane.
- Many proteins remain completely embedded within the lipid bilayer.
Correct Option: B
Flip-Flop movement is due to migration of lipid molecules from one lipid monolayer to other monolayer of lipid bilayer.
