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Cell Membrane
Barrier between the outside world and cells that is semi-permeable.
Phospholipid Bilayers
Created from hydrophobic heads that face outwards and inwards and hydrophilic tails that remain between the heads.
Large molecules ____ pass through the cell membrane.
cannot
Diffusion
When modules move from high concentration to low concentration
When molecules on opposite sides of the membrane are equally distributed, the molecules have reached:
equilibrium
Hot substances move:
fast
`Small molecules move:
fast
Osmosis
The diffusion of water across the membrane.
A cell’s environment is a huge role if the cell will:
live and die
If the turgor pressure is low, the plant will
wilt
Passive transport
does not use energy
Active transport
Uses energy
Bulk Transport
Uses vesicles
Diffusion
Movement of fluid molecules
Osmosis
Diffusion of water
Facilitated Diffusion
Larger molecules are carried using channel proteins and carrier proteins
Note 
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