In human beings,the membrane of the erythrocytes has approximately ...... percent protein and ....... percent lipids.

According to Robertson,the thickness of the lipid zone in the cell membrane ranges from

Which is the latest model that is proposed to explain the structure of the plasma membrane?

Assertion : $A$ cell membrane shows fluid behaviour.
Reason : $A$ membrane is a mosaic or composite of diverse lipids and proteins.

Keeping in view the 'fluid mosaic model' for the structure of the cell membrane,which one of the following statements is correct with respect to the movements of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

Cell recognition is mediated by components of the cell membrane. These components are generally composed of .........