Question

what are the adaptations of cell surface membrane​

Answer 1

Answer:

Amino acids, nucleic acids, carbohydrates, proteins, and ions from diffusing across the membrane, but generally allows for the passive diffusion of hydrophobic molecules. This affords the cell the ability to control the movement of these substances via transmembrane protein complexes such as pores, channels and gates .

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Answer 2

Answer:

cell membrane made up of Lipid Bilayer which are fluid in nature , means they move continuosly , due to this fluid nature they are selectively permeable to compounds.

Also more fluidity of membrane is dangerous as it will destroy the plasma membrane , hence to regulate the fluid nature of cell membrane 'Sterols' (Cholesterol ) are associated with them.