Identify ten variables that may affect aerobic fermentation in yeast

Identify ten variables that may affect aerobic fermentation in yeast. Record the variables in Table 5.

From your list of variables, select three to test. Form a hypothesis regarding how each variable may affect aerobic respira-

tion in yeast.

Determine the positive and negative controls for your experiment.

Line up five clear cups (if you do not have five cups, you can perform experiments sequentially, washing the cup thoroughly

between each treatment), and label each cup with one treatment or control type.

Place a predetermined amount of yeast and the corresponding treatment in each experimental cup, and set up your con-

trols. Be sure you have enough yeast for each treatment. Let the yeast incubate in the treatment for 15 minutes.

Using a ruler, measure the height of the foam created by the output of CO2. Take this measurement by aligning the 0 of the

ruler with the top of the waterline and measuring up to the top of the foam. Record this measurement for each treatment.