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Selective permeability
Plasma membrane controls the movement of substances that go into and out of the cell
Fluid Mosiac Model
The phospholipid bilayer
Protein
Provide pathway for substances to enter and leave.
Carbohydrate
Identify chemical signals
Cholesterol
Prevents fatty acid tails from sticking together.
Passive Transport
Movement of particles across the cell membrane without energy.
Actice Transport
Movement of particles across the cell membrane using energy
Diffusion
Movement of particles from a high area concentration to an area of low concentration
Osmosis
Diffusion of water across a selectively permeabile membrane.
Note 
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