The cell membrane is primarily made up of a phospholipid bilayer, which is described as a fluid mosaic due to its dynamic structure and the arrangement of proteins. Additionally, cholesterol molecules are present to stabilize the plasma membrane by restricting the movement of fatty acids. Proteins also form an essential component of the cell membrane.

1. THE CELL
MEMBRANE
Prepared by: Ms. Wenalyn F. Morante, LPT
SHS-TII

2. Cell membrane is composed of:
1. PHOSPHOLIPID
BILAYER

4. The cellular membrane is
often described as a fluid
mosaic. It is fluid because
the phospholipids form a
fluid rather than a solid
structure. It is mosaic
because of the
arrangement of many
proteins within the sheets
of phospholipids.

5. All cell membranes are
formed of phospholipid
molecules. The phosphate
end of each molecule
carries an electric charge; it
dissolves in water. The fatty
acid tails of each molecule
are neutral in charge and
do not dissolve in water.

7. Cell membrane is composed of:
2. CHOLESTEROL

8. Cholesterol
molecules
stabilize the
plasma
membrane of
an animal cell.

9. •When cholesterol are inserted
between two phospholipids, cholesterol
holds fatty acids in place, restricting
their movements.

10. Cell membrane is composed of:
3. PROTEINS