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Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flipflop movement)?
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- Both lipids and proteins can flip-flop
- While lipids can rarely flip-flop, protein can not
- While proteins can flip-flop, lipids can not
- Neither lipids, nor proteins can flip-flop
Correct Option: B
Keeping in view of the ‘Fluid mosaic model” for the structure of cell membrane, the movement of lipids and proteins from one lipid monolayer to the other, lipid can rarely flip-flop, protein can not. The fluid mosaic model is the most important and widely accepted latest model for plasma membrane was given by Singer and Nicolson in 1972. According the them it resembles “protein iceberg in a sea of lipids”.
