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Purple Onion Microscope Lab

Purple Onion Microscope Lab. An investigation in osmosis. Review the Lab Directions. Obtain all lab materials. Make sure you have a purple section of the onion skin. Even though the directions call for two eye droppers and two solutions, we will only be using one of each.

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Purple Onion Microscope Lab

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  1. Purple Onion Microscope Lab An investigation in osmosis

  2. Review the Lab Directions • Obtain all lab materials. • Make sure you have a purple section of the onion skin. • Even though the directions call for two eye droppers and two solutions, we will only be using one of each. • Read through Lab Directions Steps 1–8.

  3. Scenario 1 If you are having trouble finding the onion cells, here is an example: • After you have focused the microscope on low power, move to high power and begin to sketch your onion cells for Scenario 1. • Remember to record three observations.

  4. Scenario 2 If you are having trouble finding the onion cells, here is an example: • After adding the salt solution, sketch the onion cells. • Remember to record three observations.

  5. Scenario 3 • Placing distilled water on the slide will result in the onion cell expanding. • Draw this picture for Scenario 3 and record three observations.

  6. Clean Up • Turn off microscope and make sure it is unplugged. • Wet paper towel with water and wipe down slide and cover slip. • Throw away onion skin and paper towel. • Return all other materials.

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