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Osmosis and Diffusion Lab Activity

WARD470015-310 WARD470190-610
How do molecules move into and out of a cell?

  • Kit Employs NGSS Life Science DCI LS1
  • Pre and Post-Laboratory Assessments Included
  • Lab Aligned with National Standards
  • Assessments and Vocabulary Words Target Common Core Standards
  • Estimated Lab Time: 45 Minutes
This lab addresses osmosis, diffusion, and the function of these processes in maintaining homeostasis in the cell. Students use models to simulate the movement of water and nutrients across a cell membrane. The movement of molecules across the membrane is simulated using dialysis tubing and solutions of varying compositions. By employing the Life Science Framework Standard (LS1), this experiment helps students understand and explain how cell size and shape affects rates of diffusion and pose scientific questions about the selective permeability properties of cell membranes.

This kit is aligned with all published National Standards. Pre and post-laboratory assessments and vocabulary words target specific "Did You Know" concepts that link the real world with the scientific standards explored. The activity includes a teacher’s guide, a student copymaster, and material for 15 students or lab groups.

Accessories information: A refill kit is available and contains only consumable component items. It does not contain additional student or teacher guides.

Ordering information: This kit includes glucose/starch solution, iodine potassium iodide solution (IKI), glucose testing strips, cups, pipettes, and dialysis tubing. A graduated cylinder, beaker, distilled water, scissors, a tape measurer or ruler, and string are needed but not included.



Item # Description No. of Lab Groups Unit Availability Price Quantity
470190-610 Osmosis And Diffusion Lab Activity
15 Kit of 1 Retrieving Restricted
470015-310 Osmosis And Diffusion Refill
15 Kit of 1 Retrieving Restricted
restricted This product is marked as restricted and can only be purchased by approved Shipping Accounts. To apply for a shipping account number, click here. If you need further assistance, call Customer Service at 800-962-2660 or email


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