Western Kentucky University Diffusion Osmosis and Tonicity Lab Report

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Now that you’ve learned about diffusion, osmosis, and tonicity, you should understand the underlying principle behind the example experiment from Lab 1. Go back to the Controls and Variables handout, and use your knowledge of the process of cellular osmosis to formulate a hypothesis about the effect of soaking potato cells in different sucrose concentrations, along with an experiment that tests your hypothesis.

Similarly to what you did for the pillbug experiment, write a brief lab report (following the format specified in “Lab Reports: Formatting”) summarizing how you would design and execute this experiment. You already have the results, so basically work backwards from there – State your null and alternative hypotheses, identify independent, dependent, and standardized variables, and describe how you set up a control group. Be specific about the materials and methods you would use in this experiment, and write the report as if you actually did the experiment. A MS Excel graph of your experimental data is a must, and I’d suggest using a table to show your data as well. Once you’ve recorded the data (results), ­ state your conclusions and how you drew them from your results (i.e. was your hypothesis supported?why or why not?)

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