Lipids (phospholipids and cholesterol), proteins, and carbohydrate groups connected to some of the lipids and proteins make up the majority of the plasma membrane.
Membrane proteins can be divided into three main categories based on their structural characteristics: integral membrane proteins, which are permanently anchored to or a part of the membrane; peripheral membrane proteins, which are momentarily attached to the lipid bilayer or to other integral proteins. Glycolipids and glycoproteins, which are short carbohydrate chains that protrude from the surface of lipid and protein on the cell membrane, are frequently found there. They interact with the water molecules surrounding the cell to produce hydrogen bonds, which aid in stabilizing the membrane structure.
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