Biology lab
raibo0
suo_bio1020_escikit_w1_lab_template.docxWeek 1: Scientific Method
Submitted by: <your name here>
As you complete the lab, record your answers in this template. Save the document as LastName_FirstName_BIO1020_W1A4, and submit it to the Dropbox. Full lab instructions and the rubric with which you will be evaluated can be found in the online classroom.
Activity
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since virtually every living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measure in units of ppm—or parts per million. Examine the data in Table 2 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below.
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Table 2: Water Quality vs. Fish Population |
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|||||||||
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Dissolved Oxygen (ppm) |
0 |
2 |
4 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
|
Number of Fish Observed |
0 |
1 |
3 |
10 |
12 |
13 |
15 |
10 |
12 |
13 |
Questions
1. Develop a hypothesis relating the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. (10 points)
2. What would your experimental approach be to test this hypothesis? In other words, describe the experiment you would carry out in order to test your hypothesis. (10 points)
3. What are the independent and dependent variables? (10 points)
4. What type of graph would be appropriate for this dataset? Why? (10 points)
5. Graph the data from the table above. Refer to the grading rubric to ensure that your graph has all of the necessary components. You can draw your graph by hand and scan it in, or use the graphing tools in Microsoft Excel. (10 points)
