Respuesta :
The most abundant molecules in the cell membranes of the majority of the species are lipids and proteins.
• The membrane lipids are mainly of two kinds, that is, sterol and phospholipids. The commonly found sterols are cholesterol.
• The membrane proteins are mainly of two kinds, that is, extrinsic proteins and intrinsic proteins.
• One of the primary constituents of cell membrane, which comprises two fatty acids joined to a polar head group are known as phospholipids.
• In a cell membrane, the lipids are associated with protein and gives cell its structure. The interaction between the lipids and proteins is the basis of the fluid mosaic model of the cell membrane.
Thus, lipids and proteins are the most abundant molecules in the cell membranes.
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