Research Question

Research Question - by yeast. Materials Needed: Corn Syrup...

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Research Question We already know that the rate of alcoholic fermentation depends on the substrate in a solution. This substrate helps to stir on glycolysis, which is a process that produces pyruvate, which is then used in ethanolic fermentation. Ethanolic fermentation then produces CO2 as a by-product, which we will be measuring to determine the rate at which it is performed. Does the amount of substrate available change the rate of reaction? This is the question we shall be trying to answer by changing the amount of substrate available. We will be comparing these results with what we found in Lab 3 Part I. Hypothesis: If more sugar is present in the substrate, then ethanolic fermentation by yeast would increase because of an increase in glycolysis. Null Hypothesis: If more sugar is present in the substrate, then there will be no change in ethanolic fermentation
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Unformatted text preview: by yeast. Materials Needed: Corn Syrup pure [3 mL used] Corn Syrup to water mixture (1:1) [3 mL used] Yeast Suspension (3 mL used) Water (1 mL used) (4 mL used in control) 11 Styrofoam cups 22 test tubes 11 plastic tubes (with rubber stoppers on one end) Tub to fill with steaming hot water Rubber gloves (to protect hands from water burns) Methods Performed: The Methods will be performed exactly the same way as Lab 3 Part I. Variables Controlled: The amount of Water, Yeast Suspension and the amount of Substrate are all controlled. The types of Substrate used are the experimental change. Replicates: 5 for each, only 1 control (control does not have the substrate in it)...
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