View the three images of elodea leaf cells give the

This preview shows page 5 - 10 out of 13 pages.

View the three images of Elodea leaf cells. Give the tonicity for each image. Turgid Flaccid Plasmolyzed Tonicity of solution ____________ hypotonic ______ ________ Tonicity of solution ___________ isotonic _________ ______ Tonicity of solution _____________ hypertonic ____ _________ Below, describe the fluid level for the Elodea cells in the unknown sample and name the tonicity of the solution.
Describe the observations which lead to your conclusion about the tonicity of this unknown solution.
BIO 101 Lab 05: Osmosis and Diffusion 5
Red Blood Cells. Red blood cell in 0.9% NaCl, 10% NaCl, and distilled water. View the three images of red blood cells. Give the tonicity for each image. Hemolyzed Spherical Crenated Tonicity of solution __________ hypotonic ________ ________ Tonicity of solution _________ isotonic ___________ ______ Tonicity of solution _____________ hypertonic ____ _________ Below, describe the shape of red blood cells for an unknown sample and name the tonicity of the solution.
List the tonicity of solution
Describe the observations which lead to your conclusion about the tonicity of this unknown solution.
Conclusions Write a conclusion about the effect variating tonicity has on the two cell types. Describe the differences you observed comparing plant cells and animal cells placed into the three solutions. BIO 101 Lab 05: Osmosis and Diffusion 6
Part II: Osmosis in Potatoes Background This experiment allows students to observe osmosis directly in plant cells using potatoes and everyday items. View this video for a preview of this experiment. Materials Assemble these items. Check that the ruler has metric units. Check volume of cups before beginning. Table Salt (NaCl), 2 Tbs (tablespoons) Tap water Bowl Measuring cup Stirring spoon Measuring spoon: 1 Tbs (tablespoon) Use a measuring spoon! 6 tall glasses Check volume; be sure each can hold 1 cup of water. Each glass should be tall and relatively narrow at bottom, so the cut potatoes stand up inside, vertically . 3-5 potatoes (4 inches or more long) sharp knife cutting board ruler with metric units: cm, mm Tables 1 and 2 to record data, see below . BIO 101 Lab 05: Osmosis and Diffusion 7
BIO 101 Lab 05: Osmosis and Diffusion 8
Methods Note there are important differences in your method vs. the video, due to the items available in a home kitchen. Be certain follow the directions provided below.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture