Measuring Anaerobic Respiration in Yeast

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4 Terms

1
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Why is there a layer of paraffin atop the yeast solution?

The layer of paraffin / oil will stop oxygen in the air getting into the yeast, creating anaerobic conditions in yeast.

2
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How do you make the test more reliable?

Do more than 3 repeats. This is to identify anomalous results, exclude them from the mean, and calculate other statistics.

3
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Control Variables

Do not change the temperature

Do not change the pH of the yeast

4
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Why should we use a gas syringe?

Use a gas syringe to measure the volume of gas produced in the solution