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Keeping in view the fluid mosaic mod...

Keeping in view the fluid mosaic model for the structure of cell membrane which one of the following statement is correct w.r.t. the movement of lipids and proteins from one lipid monolayer to the other ( described as flip- flop movement ) ?

A

Both lipids and proteins can flip-flop

B

While lipids can rarely flip-flop , proteins cannot

C

While proteins can flip-flop , lipids cannot

D

Neither lipids , nor proteins can flip-flop

Text Solution

Verified by Experts

The correct Answer is:
B
Mobility of membrane proteins due to the fluid property of lipid bilayer was demonstrated by classical experiment of D Frye and M Edidin(1970) Lipid mole cules very rarely migrate from one lipid monolayer co other monolayer of lipid biomolecular layer
such a type of movement is called flip-flop or ransbilayer movement and occurs once a month for any individual lipid molecule. But protein can never perform flip-flop movement.
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