Osmosis, Lab Math, & Microscopes: An Inquiry Based Approach for Reviewing Basic Lab Skills and Concepts while Investigating Plasmolysis in Elodea Cells
Joanna R. Vondrasek
Tested Studies in Laboratory Teaching, 2013, Volume 34
Supplemental Materials:
Abstract
In this inquiry-based lab suitable for cell biology or introductory biology, students design an experiment to determine the sodium chloride concentration that will cause plasmolysis in Elodea canadensis leaf cells. This lab engages students in experimental design using simple and familiar laboratory techniques, but it also serves as a review of cell structures, osmosis, and essential laboratory skills. Students prepare and observe living cells using microscopy and review laboratory math by making and diluting salt solutions. At the end of the activity, lab groups compare protocols and results. Several possible extensions to the lab are presented.
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