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In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system.

This three-part lab helps learners understand the essential principles governing diffusion and osmosis.

In this activity, learners are challenged to eat some candy as a cell would need to as well as to think about some of the problems that arise when a cell ingests food.