BIOL Lab Report

respirometer. The initial height of the bubble was measured in each set of tubes, and recorded observations. All five pairs of test tubes placed into 40 ° C water bath. Measured and recorded the actual height of the bubble in each set of test tubes in millimeters every five minutes for twenty minutes. Subtracted the initial amount from the actual amount in each tube during each interval and to calculate the amount of carbon dioxide present in each tube during each interval. Graphed the data from tubes 2, 3, and 4. Results: The amount of CO2 produced ranged from 0mm to 10mm. The amount of CO2 produced with 2 mL honey was the lowest. The amounts between 3ml Honey and 4mL both showed values above the others. All 3 amounts of honey showed increasing values in CO2 as time passed. The rate at which the amounts of CO2 increased varied depending on the amount of honey. Time (min) Actual (mm) Initial (mm) CO2 (mm) 5 7 7 0 10 8 7 1 15 11 7 4 20 14 7 7 Tube 2: 2mL Honey, 3mL Yeast, 2mL DI water, and 3mL of Glucose Time (min) Actual (mm) Initial (mm) CO2 (mm) 5 6 5 1 10 7 5 2 15 10 5 5 20 15 5 10 Tube 2: 3mL Honey, 3mL Yeast, 1mL DI water, and 3mL of Glucose Time (min) Actual (mm) Initial (mm) CO2 (mm) 5 5 4 1 10 8 4 4 15 10 4 6 20 12 4 8 Tube 2: 4mL Honey, 3mL Yeast, and 3mL of Glucose