Glycolysis in an anaerobic environment produces a net of 2 ATP and Pyruvate.  Why does Yeast bother to ferment Pyruvate to Ethanol?

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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I am needing help with 1 through 3, please

1)   Using the graphs, indicate if the data supports or does not support the hypothesis: The rate of balloon inflation will be directly proportional to the amount of sugar added to the yeast solution. Also, which graph illustrates the most clearly what happened in the experiment and why?

2)  Which graph illustrates the most clearly what happened in the experiment?  Why?

3) Glycolysis in an anaerobic environment produces a net of 2 ATP and Pyruvate.  Why does Yeast bother to ferment Pyruvate to Ethanol?

Fold Change
Time (min 0 sugar (cc1 sugar (e: 2 sugar (e: 3 sugar (experiment)
0
0
96.24
215.19
0
99.12
162.84
0
66.45
92.97
0
61.82 101.53
30
60
90
Fold change
250
200
150
100
50
0
42.81
26.96
14.73
24.82
The Effect of Different Sugar Concentation on
Yeast Fermentation
Fold Change
Time (minutes)
Time (minutes)
0
30
60
90
Transcribed Image Text:Fold Change Time (min 0 sugar (cc1 sugar (e: 2 sugar (e: 3 sugar (experiment) 0 0 96.24 215.19 0 99.12 162.84 0 66.45 92.97 0 61.82 101.53 30 60 90 Fold change 250 200 150 100 50 0 42.81 26.96 14.73 24.82 The Effect of Different Sugar Concentation on Yeast Fermentation Fold Change Time (minutes) Time (minutes) 0 30 60 90
Balloon's Volume
Time (min 0 sugar te: 1 sugar te: 2 sugar te 3 sugar teaspoon
0.37
0.54
0.75
1.29
1.62
2.05
1.69
2.5
3.04
2.21
2.95
3.4
0
30
60
90
4.5
4
3.5
3
volume
Nw
2.5
2
1.5
1
0.5
0
Balloon's
Volume
0.83
2.42
3.28
3.87
Balloon and Sugar Experiment
Time (mintues)
→→→Time (minutes) --0-30-60-90
Transcribed Image Text:Balloon's Volume Time (min 0 sugar te: 1 sugar te: 2 sugar te 3 sugar teaspoon 0.37 0.54 0.75 1.29 1.62 2.05 1.69 2.5 3.04 2.21 2.95 3.4 0 30 60 90 4.5 4 3.5 3 volume Nw 2.5 2 1.5 1 0.5 0 Balloon's Volume 0.83 2.42 3.28 3.87 Balloon and Sugar Experiment Time (mintues) →→→Time (minutes) --0-30-60-90
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