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Regarding the 'fluid mosaic model', which movement is correct for lipids and proteins?

  1. A
    Neither lipids nor proteins can flip-flop
  2. B
    Both lipids and proteins can flip-flop
  3. C
    While lipids can rarely flip-flop, proteins cannot
  4. D
    While proteins can flip-flop, lipids cannot

Solution & Step-by-step Explanation

In the lipid bilayer, lipids can rotate and move laterally frequently, but "flip-flop" (moving from one monolayer to the other) is very rare. Proteins, due to their size and polarity, cannot flip-flop.

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Regarding the 'fluid mosaic model', which movement is correct for lipids and proteins?
A
Neither lipids nor proteins can flip-flop
B
Both lipids and proteins can flip-flop
C
While lipids can rarely flip-flop, proteins cannot
D
While proteins can flip-flop, lipids cannot

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Cell BiologyPlasma MembraneFluid Mosaic Model

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