Osmosis and Tonicity Worksheet
Explore the principles of osmosis, tonicity (isotonic, hypotonic, hypertonic solutions), and their effects on plant and animal cells.
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Osmosis and Tonicity
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Read each question carefully and answer to the best of your ability. Diagrams are provided to help you visualize the concepts.
1. Which term describes the movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration?
Diffusion
Active Transport
Osmosis
Facilitated Diffusion
2. A red blood cell placed in a hypotonic solution will likely:
Shrink and shrivel
Swell and burst
Remain unchanged
Undergo plasmolysis
3. When a plant cell is placed in a hypertonic solution, its cell membrane pulls away from the cell wall. This process is called .
4. A solution with a higher concentration of solutes than the cell's cytoplasm is described as .
5. Osmosis requires energy to move water molecules across a membrane.
True
False
6. An isotonic solution has the same solute concentration as the cell's cytoplasm.
True
False
7. Describe what happens to a plant cell when it is placed in a hypotonic solution.
8. Explain the difference between osmosis and diffusion.
9. Examine the diagram of the cell membrane below. Explain how its structure relates to its function in osmosis.
