Tuesday, November 8, 2011

How does yeast metabolize glucose at different temperatures?

You place 10g of glucose, 3 grams of yeast, and 200 mL of water into a flask and cover the top with an airlock attached to a rubber stopper. Yeast is capable of metabolizing glucose. You produce three such steps and incubate them at three different temperatures: 4degrees C (the temperature of a refrigerator), 22 degrees C (room temperature), and 37 degrees C (body temperature). You count the number of bubbles being generated per minute after an initial 10 minute incubation which was repeated two more times at 20 and 30 minutes. Describe what you expect to see under these conditions. Explain your reasoning for your description.

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