Cellular respiration Lab Report

THIS INFORMATION AND THESE PICTURES MUST BE INCLUDED INTO THE RESULTS SECTION. ALL QUESTIONS MUST BE ANSWERED USING THIS INFO AND INCLUDED UNDER THE RESULTS SECTION:

● What changes do you observe in each yeast culture? ● Did the results match your hypothesis? If not, what do you think

happened? (Hint: look at your experimental setup; can you see any caveats?)

● Which tube is the cloudiest? What does this mean? ● Which tube is the least cloudy? What does this mean? ● Which tube had no effect? Why?

At no inflation: D=3.6 cm

Balloon Diameter (cm) Depth of Bubbles (cm)

Time (min)

A. Control B. Aerobic C. Anaerobic A. Control B. Aerobic C. Anaerobic

0 3.6 3.6 3.6 0 0 0 30 3.6 3.6 3.6 0 0.1 0.1 60 3.6 3.6 3.82 0 0.3 0.2 90 3.6 3.6 4.46 0 0.6 1.0 120 3.6 3.6 5.10 0 0.7 1.3 150 3.6 3.6 5.25 0 1.1 1.8 180 3.6 3.6 5.41 0 1.1 2.0

Ethanol Color % Ethanol pH color pH A. Control No Color Change 0 Yellowish Green 7 B. Aerobic No Color Change 0 Bright Orange 6 C. Anaerobic Light Blue 0.02 Bright Orange 6

Time (min)

Observation

0

30

60

90

120

150

180

Results

G​uidelines

Serial Dilution A. Control

B. Aerobic

C. Anaerobic