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This Effect of Size on Uptake by Diffusion lesson plan also includes:
Cell size is limited by the surface area to volume ratio, but why is this true? Scholars measure the surface area and volume of cubes before placing them into liquid. After a set amount of time, they measure the uptake by diffusion for each sample. To finish, they draw conclusions and answer analysis questions.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Connect their observations to the diffusion rates for large organisms
Classroom Considerations
- Requires prior understanding of surface area and volume
- Prepare the solid agar prior to class
Pros
- Provides a sample data table
- Offers a link to related experiments
Cons
- None