| Graphically demonstrate that a cell's membrane is selective in
determining which substances it allows to pass in and out. Using a
semi-permeable membrane model that simulates a living cell, your
class will observe how this process of diffusion allows the cell
to absorb vital nutrients and eliminate wastes. Additionally,
students will investigate the process of osmosis and learn how
this passive transport of water through the cell's membrane
maintains equilibrium. As a result, they will also learn what
factors affect osmosis and how to quantify the rate of this
critical process.
Your students will:
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- Construct models of cells using dialysis tubing to simulate
the semi-permeable nature of the plasma membrane
- Observe the effects of osmosis on a model cell
- Study the effects of diffusion through a semi-permeable
membrane
- Predict the characteristics of substances which allow them
to pass through a semi-permeable membrane
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| Includes enough materials for a class size of 40 students.
Recommended for students in grades 7 through 10. Manufactured by
Neo/SCI. |

Construct models of cells using dialysis tubing.
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