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## Cell Membrane - Cell membrane and each molecule has two ends - Polar end: hydrophilic - Non-polar end: hydrophobic - Proteins are embedded in lipid bilayer. - Cholesterol Molecules: - Are between phospholipids. - Contributes to fluidity and stability of cell membrane. ## Functio...

## Cell Membrane - Cell membrane and each molecule has two ends - Polar end: hydrophilic - Non-polar end: hydrophobic - Proteins are embedded in lipid bilayer. - Cholesterol Molecules: - Are between phospholipids. - Contributes to fluidity and stability of cell membrane. ## Functions of Lipid Layer in Cell - Lipid layer of the cell membrane is a semipermeable membrane to pass through it. - For example, oxygen, carbon dioxide and water can pass through it.