Cell Membrane Function Worksheet
Explore the structure and various functions of the cell membrane, including transport mechanisms and cell signaling, for Grade 11 Biology students.
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Cell Membrane Function
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Read each question carefully and answer to the best of your ability. Refer to the provided diagram for questions related to cell membrane structure.
The diagram below illustrates a cross-section of a cell membrane.
1. Which component of the cell membrane is primarily responsible for its selective permeability?
Cholesterol
Glycoproteins
Phospholipid bilayer
Peripheral proteins
2. Active transport differs from passive transport in that it:
Requires ATP
Moves substances down their concentration gradient
Involves channel proteins only
Does not involve membrane proteins
3. The fluid mosaic model describes the cell membrane as a dynamic structure composed of a bilayer with embedded .
4. is the movement of water across a selectively permeable membrane from an area of high water concentration to an area of low water concentration.
5. Facilitated diffusion requires energy in the form of ATP.
True
False
6. Endocytosis and exocytosis are examples of bulk transport mechanisms.
True
False
7. Describe the role of cholesterol in the cell membrane.
8. Explain the difference between diffusion and facilitated diffusion.
Match the term on the left with its description on the right.
9. Glycocalyx
a. Movement of substances against a concentration gradient
10. Active Transport
b. Cell-to-cell recognition and adhesion
11. Channel Protein
c. Provides a hydrophilic passage for ions and small polar molecules