1. Make sure your sound is turned on
Fermentation Lab Prep
Make sure your sound is turned on

2. C6h12o6 = 2ch3ch2oh +2co2 + energy
Fermentation is the breakdown of carbohydrates by enzymes, bacteria yeasts, or mold in the absence of oxygen.
Lactic Acid Fermentation
Glucose
Glycolysis (pyruvic acid)
Lactic acid +
2 ATP
Alcoholic Fermentation
Glucose
Glycolysis (pyruvic acid)
Carbon Dioxide +
Ethyl Alcohol
2 ATP
C6h12o6 = 2ch3ch2oh +2co2 + energy
Glucose Ethyl Alcohol Carbon Dioxide

3. 1 Erlenmeyer flask
1 glass
stirring rod
2 beakers
Sugar
scissors
yeast
balloon
1 thermometer

4. String
ruler
meterstick
Sharpie
worksheet
pencil

5. 1. Measure 100 ml of water 2. Check to make sure the water is warm:
the temperature is 41 C

6. 3. Add yeast to water
4. stir, then add yeast mixture to a flask

7. 6. Place the balloon over the top
5. Add a cube of sugar

8. 7. Wrap string around the balloon
8. Measure the string to determine the circumference

9. Develop a question drawn from the information you have learned about yeast fermentation
Form a testable hypothesis
Make a prediction
Develop a procedure using the same tools and materials in this example.
You and your lab group member (or members) will need to discuss and agree before submitting your decision in writing.
Now What?

10. Design and present your findings
You will be conducting this lab over a 2 day period
Day 1: collecting data
Day 2: Analyzing data and writing a formal lab report.
Design and present your findings