NAME______________________ DATE_________ PERIOD_________
Cell Membrane Coloring Worksheet
Composition of the Cell Membrane & Functions
A. Purpose
1. It is the gate keeper of the cell, allowing only certain material
in or out.
B.Phospholipids
1. The cell membrane is also called the _______________
membrane.
2. It is made of a phospholipid _____________.
(bi = _____, bilayer = 2 layers)
3. The phospholipids have 1 hydrophilic ______________
(water attracting) and 2 hydrophobic ______________
(water repelling).
4. Phospholipids can move _______________ and allow water
and other _________ molecules to pass through into or out of
the cell.
5. SKETCH AND LABEL a phospholipid coloring the heads red
and the tails blue.
1
C.Proteins
1. In the membrane there are channel ______________.
2. Proteins help move ______________ molecules across cell
membranes.
D.Receptors
1. ______________________help cells in recognizing each other
and certain molecules.
List 4 functions of the cell or plasma membrane:
a.
_________________________________________
b.
_________________________________________
c.
d.
_________________________________________
2
C
B
A
Correctly color code and identify the name for each part of the cell
membrane.
Letter
_____
Name/Color
Phospholipid
Phosphate Head - brown
Lipid (Fatty acid) Tails – yellow
_____
Receptor molecules (red)
_____
Proteins (blue)
3