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Questions and Answers
What is osmosis?
What is osmosis?
What happens to an animal cell in a hypotonic solution?
What happens to an animal cell in a hypotonic solution?
What is the term for a solution with exactly the same water concentration as the cell?
What is the term for a solution with exactly the same water concentration as the cell?
What happens to the cell in a hypertonic solution?
What happens to the cell in a hypertonic solution?
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What is the direction of water movement in osmosis?
What is the direction of water movement in osmosis?
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What is the result of osmosis in a hypotonic solution?
What is the result of osmosis in a hypotonic solution?
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What is the role of the cell membrane in osmosis?
What is the role of the cell membrane in osmosis?
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What is the difference between diffusion and osmosis?
What is the difference between diffusion and osmosis?
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Study Notes
Osmosis and Cell Response
- Osmosis is the net diffusion of water across a selectively permeable membrane toward a higher solute concentration.
- The movement of water across the plasma membrane is affected by the amount of substance dissolved in water.
Cells in Different Solutions
- If a cell is placed in a hypotonic solution (dilute solution with higher water concentration), the cell will gain water by osmosis, causing it to swell up.
- If a cell is placed in an isotonic solution (solution with the same water concentration as the cell), there will be no net movement of water, and the cell will stay the same size.
- If a cell is placed in a hypertonic solution (concentrated solution with lower water concentration), the cell will lose water by osmosis, causing it to shrink.
Key Terms
- Hypotonic solution: a solution with a higher water concentration than the cell.
- Isotonic solution: a solution with the same water concentration as the cell.
- Hypertonic solution: a solution with a lower water concentration than the cell.
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Description
Learn about osmosis, the movement of water across the cell membrane, and its effects on animal and plant cells in different solutions.