Class Data for pH, Temperature, and Osmotic Effects
pH Effects on Microbial Growth
Escherichia coli Staphylococcus Sporosarcina Saccharomyces
pH Vis. Read % T O.D. Vis. Read % T O.D. Vis. Read % T O.D. Vis. Read % T O.D.
30 99
0.0043648
0 99
0.0043648
0 99
0.0043648
2 77
0.1135093
51 87
0.0604807
1 85
0.0705811
0 99
0.0043648
3 62
0.2076083
73 60
0.2218487
3 58 0.236572 1 93
0.0315171
1 90
0.0457575
82 84
0.0757207
1 92
0.0362122
1 87
0.0604807
0 99
0.0043648
90 99
0.0043648
0 99
0.0043648
3 61
0.2146702
0 99
0.0043648
10 0 99
0.0043648
0 99
0.0043648
3 55
0.2596373
0 99
0.0043648
Temperature Effects on Microbial Growth
Serratia E.coli
Temp. Vis. Read % T O.D. Vis. Read % T O.D.
51 85
0.0705811
0 99
0.0043648
25 3 62
0.2076083
3 65
0.1870866
38 3 58 0.236572 3 55
0.2596373
42 0 99
0.0043648
1 88
0.0555173
55 0 99
0.0043648
0 99
0.0043648
% NaCl E. coli Staph aureus Halobacterium
0.5 330
5120
10 010
15 003
1) Please Fill in the O.D. values for the
following 3 charts.
2) Using the O.D. values only, create bar
graphs for each data set using the "Chart
Wizard" icon.
3) Enter the names of the organisms in a
row across the top and enter the variables
in the leftmost column. Follow the steps in
the Chart Wizard to label your graphs.
4) Answer the questions in the
Environmental effects on microbial growth
worksheet related to these graphs.
Osmotic Pressure Effects on Growth (amount of growth 0 to 3+ after 48 hrs)
