Students study the effects of fermentation by observing the gas produced by the breakdown of sugars by yeast. Yeast is placed in four tubes of warm water with varying amounts of sucrose. The tubes are sealed with a balloon. The balloons expand depending on how rapidly fermentation takes place. The students are asked to make predictions about the final size of the balloons.
1. Explain aerobic respiration and fermentation and the differences between them
2. Predict which condition will produce the most rapid fermentation
3. List some uses and effects of fermentation in the human diet
Lesson Materials (view or download)
aerobic respiration, fermentation, ATP, glycolysis
Last updated: 3/3/2015