The document describes the cell membrane model known as the fluid mosaic model. The cell membrane is made up of a phospholipid bilayer with two layers of phospholipid molecules arranged so that their hydrophilic heads face outward and their hydrophobic tails face inward. This structure forms a fluid structure where proteins are able to move within the membrane.

1. Cell Membrane Model
The Bubble Lab

2. Cell Membrane

3. Phospholipid Molecule

4. Phospholipid Molecule
Hydro = water
Phillic = loving
Phobic=fear

5. Phospholipid bilayer
2 layers of
phospholipid
molecules.
Arranged so
hydrophillic
(water loving”
“heads” face
outward
toward water.

6. Phospholipid Molecule

7. Fluid Mosaic
video
Called the
“fluid mosaic”
model,
because
proteins can
move within
the membrane.