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Transcript
Biology HS/Science Unit: 04 Lesson: 02 Cell Membrane Tutorial 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? ©2012, TESCCC 08/16/12 page 1 of 2 Biology HS/Science Unit: 04 Lesson: 02 5. What is the purpose of the fibrous proteins in the cell membrane? 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? ©2012, TESCCC 08/16/12 page 2 of 2