Lab Alcoholic Fermentation

YEAST LAB REPORT PART I: ALCOHOLIC FERMENTATION

Research Question: What will be the effect of increasing the number of yeast cells on the rate of fermentation? State your answer as a general hypothesis:

Rate of fermentation: Amount of CO2 gas produced over a unit of time

METHODS

Table 1: Contents of the Yeast Fermentation Tubes
| |Volume (milliliters) That You Need to Add |
|Fermentation | |
|Tube Number | |
| |Distilled Water |Yeast Mixture |50% Corn Syrup |
|Tube 1 |6 ml |0 |3 ml |
|Tube 2 |3 ml |3 ml |3 ml |
|Tube 3 |0 |6 ml |3 ml |

QUESTION: What are your independent and dependent variables and which tube is your control?

• Independent variable:

• Dependent variable:

• Control tube:

Experimental Science Projects (http://www.isd77.k12.mn.us/resources/cf/SciProjInter.html)
Some Hypotheses for Biology Labs (http://www.accessexcellence.org/21st/TL/filson/biol.html) http://school.discovery.com/sciencefaircentral/scifairstudio/handbook/scientificmethod.html RESULTS

TABLE 2:____________________________________________________________

__ (Place an appropriate & descriptive title here)

| |TIME (minutes) |
|Tube #