Hypothesis: Increasing water temperature had no effect on the fermentation rate of yeast.
Experiment: Compared yeast in room temperature (22ºC) water to yeast in lukewarm (45°C) water.
Measured CO2 production. Results are shown below.
Effect of Temperature on CO,
Production in Yeast
Which statement is the most appropriate
conclusion for David to write?
Increasing temperature had an effect on
fermentation rate.
The yeast in lukewarm water had a faster
rate of fermentation than the yeast in room
temperature water.
The results do not support the hypothesis
because the yeast in lukewarm water had a
faster fermentation rate than the yeast in
room temperature water.
CO, (mL)
5
25
10 15 20
Time (min)
22C- 45°C