Cell Membrane Tutorial

Cell Membrane Tutorial
Biology
HS/Science
Unit: 04 Lesson: 02
Objective: Complete the online cell membrane tutorial to gain a better understanding of the structure
and function of the cell membrane.
Instructions: Complete the tutorial “Construction of the Cell Membrane” at this website:
http://www.wisc-online.com/objects/ViewObject.aspx?ID=AP1101
Answer the questions below:
1. What is the cell membrane composed of?
2. What types of molecules go through the cell membrane easily?
3. What types of molecules need more help to get through the cell membrane? What helps them get
through?
4. What are the two parts to the phospholipid bilayer of the cell membrane, and how are they
arranged?
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5. What is the purpose of the fibrous proteins in the cell membrane?
Biology
HS/Science
Unit: 04 Lesson: 02
6. What is the function of channel proteins in the cell membrane?
7. In which type of cell will you find cholesterol molecules in the cell membrane? What is their
function?
8. The cell membrane is said to be selectively permeable. What does this mean? (You may need to
use additional resources to determine the answer to this question.)
Science Notebook Writing Activity:
Once the activities within the tutorial have been completed, record the following in your science
notebook: write a 1–2 paragraph summary about the cell membrane. It should include:
a. Description and brief sketch of the lipid bilayer of the cell membrane
b. Function of the cell membrane
c. What molecules can easily diffuse through the membrane, and how larger molecules get through
the membrane?
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