Describe a simple experiment to investigate carbon dioxide production by yeast, in different conditions
An experiment which would be viable would be:
1. To get a set amount of yeast and sucrose and to mix them. In this example, it would be 10 ml of yeast with 15 ml of sucrose.
2. Then a set amount of the solution should be added to 5 or more different test tubes.
3. The solution HAS to respire anaerobically, so no more oxygen can be let in. A bung put on top of the test tube will stop any air from coming in.
3. A change in each of the test tubes must be apparent, in this case we will use temperature. One of the test tubes will be at 5 degrees, and the temperature goes up by 10 until all the test tubes are done.
4. The gas can be collected in a water trough, using the displacement of water to determine how much CO2 is produced.
Thank you for all the good defenitions. Just failed my IGCSE Double Award Science Last Year and now i am revising all of this with your Blogspot. I hope I pass if I learn all of this. But you wrote in this part two times 3 ;=)
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