Cell Membrane

• Cell membrane is made up of what? (3)

  Phospholipid bilayer, cholesterol, and lipids
• Cholesterol: HYDROPHOBIC
• Phospholipid bilayer: HYDROPHILIC
• Cell membrane: barrier between the INTERNAL and EXTERNAL environment
• Selective permeability: not all are permitted to enter
• What senses what is lacking in the cytoplasm?

  Cell membrane
• Among water-soluble components or fat components, which is readily absorbed by the cell membrane?

  Water-soluble components