Tiny Bubbles Lab, biology homework help
Data:
|
Group 1 |
Group 2 |
Group 3 |
Group 4 |
Group 5 (my group) |
Av. |
|
|
yeast/ sucrose |
51 |
27 |
25 |
63 |
31 |
39.4 |
|
yeast/ glucose |
54 |
34 |
17 |
40 |
52 |
39.4 |
|
yeast/ lactose |
4 |
2 |
18 |
4 |
4 |
6.4 |
|
yeast/ molasses |
44 |
62 |
102 |
96 |
25 |
65.8 |
|
yeast/ fructose |
25 |
25 |
11 |
45 |
65 |
34.2 |
|
yeast/ water |
1 |
4 |
3 |
2 |
2 |
2.4 |
- What differences do you note in the number of bubbles that you see?
- How did your data compare with the class average?
Analysis and Conclusions:
- What was the purpose of the yeast and water solution?
- What is the name of the gas that is inside the bubbles released from the solutions? Can you design a test to identify this gas?
- Explain how the counting of the gas bubbles is a way of measuring fermentation.
- Which sugar was the best food source for yeast? Give evidence to support your answer.
- How does the molasses differ from the other sugars that you used?
