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April 23, 2026, 04:34:07 pm
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Author Topic: Questions about practical  (Read 884 times)  Share 

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HighSchoolerRS

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Questions about practical
« on: March 13, 2018, 07:07:36 pm »
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Hi guys!
So we recently did a prac investigating respiration in yeast. We put paraffin oil over the yeast suspension. I suspect that this was to stop oxygen availability but I am not completely sure. Could someone please explain whether or not oxygen and carbon dioxide are able to pass through paraffin oil?
Thanks.
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PopcornTime

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Re: Questions about practical
« Reply #1 on: March 15, 2018, 03:48:02 pm »
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Not sure about carbon dioxide, but you are right. It is to prevent oxygen entering the solution below the oil. This ensures that only anaerobic respiration is occurring/that there are only anaerobic conditions in the apparatus you used.
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