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Osmosis Tuber Experiment

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    Biology 1208 Formal Writing Assignment

    I certify that the writing in this assignment is my individual work and is my intellectual property. It does not contain the ideas or writing of other individuals/authors.  Lab Section: 5 Lab Topic: Sucrose Effect on Potato Tuber Cells Test question: How does sucrose concentration in a solution affect the osmotic concentration of potato tuber cells? Null Hypothesis: The different sucrose concentrations will not affect the mass of the potato slice; change is measured by the percent change in mass.

    Alternative Hypothesis: As the sucrose concentration increases the percent change in mass will decrease. Results: The overall trend of percent change of mass vs. sucrose concentration goes down in a negative slope. The result that relates to our hypothesis is the negative slope because it shows that the sucrose concentration (x-axis) increases while the percent change in mass (y-axis) decreases Graph on next page. Results: The date correlates to how the percent change in mass decreases as the sucrose concentration increases.

    We accepted our alternative hypothesis. From the results, the null hypothesis was rejected because the sucrose concentration does affect the mass of the potato. The data collected in the experiment displays that the concentration of sucrose increases which causes the mass to decrease which in turn decreases the percent change in mass. The percent changes in mass and sucrose concentration have a negative correlation. The 2 concentrations are hypotonic because we saw again in the mass percent change.  Concentrations are hypertonic because we saw a loss in percent mass change. The isotonic sucrose concentration is approximate. We accept our alternative hypothesis because the graph supports the percent change in mass decreases as the sucrose concentration increases. The hypertonic concentration levels allow the mass to be gained and the hypotonic concentration levels allow the mass to be lost.

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