This lab has two different activities. In Part A of this lab, the observation of plasmolysis in a living cell is a qualitative measurement. Students will observe cells under the microscope as plasmolysis takes place. In Part B, the student will quantitatively measure plasmolysis by measuring the amount of water lost in grams from potato slices. Students will draw pictures and describe what they see in Part A. Students will measure and graph their results in Part B.
NOTE: This product is also available in a bundled product called Biology Labs: 15 Must Do Labs for a Biology Class
NOTE: This product is also included in a large, bundled unit lesson plan and can be viewed here: Cell Structure and Function Complete Bundled Unit Plan
1. To observe the process of plasmolysis inside living cells.
2. To observe the effect of different types of solutions on living cells.
3. To quantitatively measure the rate of plasmolysis in potato slices.
Materials: Microscopes, Microscope slides, Cover slips, 5% sodium chloride solution, Medicine droppers, Elodea plant, 10% sodium chloride solution, Distilled water, Potatoes, various sugar solutions, 100 mL beakers, Balances.
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