1. <<Enter a Lab Report Title>>
<<Enter your names>>

2. Yeast Characteristics
Yeasts’ Function is >>>>>>>
<<<Describe the type of organism Yeast is>>>>
<<In a complete sentence tell me: What process gives yeast its energy? Describe the process.>>
  <<In a complete sentence tell me: How do you know that yeast did this process?>>

3. Group Roles: Making sure your group is on task
Team Leader and Data Collector: <<name>>
Making sure your group is on task
In charge of choosing the variable to test
Making sure your experiment is approved by Ms. Boyea
Collecting Data
Experiment Leader: <<name>>
Creating the experimental set-up
Getting supplies and setting it up
Running the timer and tell the leader when to collect a data point

4. Yeast Lab Information
The Independent Variable I am changing is <<<enter IV>>
The Dependent Variable is <<<enter DV>>. It is the variable that is changed and I will measure for the results.
Hypothesis is a prediction based on your knowledge. <<enter your Hypothesis>>
My control experiment is going to have <<enter what’s in your control bottle>> and I will compare my experiment to it.
I will keep the following conditions constant:

5. Materials
<<enter a list of all the materials you need!>>

6. Procedure Label 1 tube ‘Control’ and 1 tube ‘Experiment’
To control tube: add 5 mL of 5% Sucrose solution (table sugar and water) and 5 mL of yeast
To Experiment tube: <<enter what you are going to change for this tube>>
Swirl
Use tongs to set tube in hot water bath that’s at 38-40° C for 5 minutes. Make sure the temperature stays constant <<if you are changing temperature tell me how here>>
While you wait, turn on your Lab quest and plug in the probe. Let the probe acclimate and 3 minutes record the amount of CO2 in the air
Take your tongs and pick up the tube. Pour each warm yeast solution into a respiration chamber. Quickly place the probe in the chamber.
Wait 2 minutes for it to equalize. Take your first measurement for time 0
Collect Data every 5 minutes

7. Data Analysis Experimental Test Control Test Time (min)
CO2 (parts per million: ppm)
Respiration Rate (ppm/min) 5 10 15 20

8. Data Analysis
<<Explain what you can say about your data.>>

9. Error Analysis
<<Insert sources of Error. What things could have effected your results? Did you mess anything up>>

10. Questions for Analysis:
Why do you need to incubate the yeast before you start collecting data?
Yeast live in many different environments. Make a list of some locations where yeast might naturally grow. Estimate the possible food sources at each of these locations.

11. Questions for Analysis:
What type of cell respiration is yeast doing and what could you measure to confirm that?
When bread is baked, the dough is placed in a warm place to ‘rise.’ However, if you want to bake the bread the next day the dough can be kept overnight in a refrigerator and it won’t rise. Explain why a baker can do this.

12. Conclusion:
In a paragraph summarize the results right into your formal lab report. Include the following:
The purpose of the lab
What is used to indicate respiration rate
Was your hypothesis correct?
Conclusions supported by experimental data
Explain why you see the patterns you reported: