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Cell Membrane

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Question

According to widely accepted "Fluid mosaic model", the 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?

A

Proteins can also undergo flip -flop movements in the lipid bilayer

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B

Many proteins remain completely embeded within the lipid bilayer

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C

Proteins in cell membranes can travel within the lipid bilayer

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D

Proteins can remain confined within certain domains of the membranes

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Solution

The correct option is A Proteins can also undergo flip -flop movements in the lipid bilayer
The proteins in the lipid bilayer cannot undergo flip-flop movements, thus this is the right answer. All the things in the other options do occur in the lipid bilayer.

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