Diffusion of Starch and Potato Osmosis

The students will discover how the movement of material occurs through the selectively permeable cell membrane, a highly selective barrier. They will observe the processes of diffusion and osmosis, first in two teacher-led demonstrations, and then through two lab activities: the diffusion of starch molecules through a plastic bag and potato cores immersed in isotonic, hypotonic, and hypertonic solutions. Finally, students will connect this knowledge to how water moves in and out of a cell in different solutions.
Resource ID#: 129043 Type: Lesson Plan
Rate It!
Feedback?

Please sign in to access this resource

Teacher
Click here to sign in
as a FL public educator

Not a Florida public school educator?

Access this resource
on CPALMS.com

General Information

Subject(s): Science
Grade Level(s): 9, 10, 11, 12
Intended Audience: Educators educators
Suggested Technology: Computer for Presenter, Internet Connection, Interactive Whiteboard, LCD Projector, Speakers/Headphones, Adobe Flash Player, Microsoft Office, Computer Media Player, Java Plugin
Instructional Time: 2 Hour(s) 30 Minute(s)
Keywords: Diffusion, Osmosis, Cell membrane, solute, solvent, concentration, cytoplasm, ion, hypertonic, hypotonic, isotonic, Permeable, semi-permeable, dynamic equilibrium, kinetic energy, osmotic effect
Instructional Component Type(s): Lesson Plan
Resource Collection: FCR-STEMLearn Cell Biology

Aligned Standards

This vetted resource aligns to concepts or skills in these benchmarks.

Related Resources

Other vetted resources related to this resource.