Reason for Effect of Ethanol on Rate of Respiration of Yeast?

Subject: Reason for Effect of Ethanol on Rate of Respiration of Yeast?

Date: Mon Jun 13 08:17:39 2005
Posted by Sally
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Microbiology
ID: 1118668659.Mi

Message:


Hi, I just did an experiment on the total amount of carbon dioxide produced by
yeast when fermenting a certain amount of apple juice. I found that if you add
extra ethanol into the apple juice, the total amount of carbon dioxide produced
decreases. But I also found that the rate of respiration of the yeast decreases,
when compared to a situation where there is no ethanol present (ie, it took a
long time for the yeast to finish fermenting all of the apple juice) - I don't
understand why the rate of respiration decreases. Can you help me?

Re: Reason for Effect of Ethanol on Rate of Respiration of Yeast?

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