Lab 1 Introduction to Science BIO101
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Access Code (located on the lid of your lab kit):
Exercise 1: Data Interpretation
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many
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 measured in units of ppm (parts per million). Examine the data
in Table 4 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.
Table 4: Water Quality vs. Fish Population
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
Post-Lab Questions
1. What patterns do you observe based on the information in Table 4?
When the oxygen dissolved at 12ppm, the fish population also increased as well. Also
when oxygen level reaches 14 ppm, the amount of fish decreases but then in rises
again.
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the
water sample and the number of fish observed in the body of water.
When more ocygen is added to the water, the population of the fish will increase as
well.
3. What would your experimental approach be to test this hypothesis?
For the experiment, with the same amount of oxygen a different bodies of water
would be used. Then compare them to the fish population that is in water that has
different level of dissolved oxygen.
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https://www.coursehero.com/file/102793711/BIO101L-Lab-1docx/
, Lab 1 Introduction to Science BIO101
4. What would be the independent and dependent variables?
Indepent Variable-dissolved oxygen
Dependent Variable-# of the fish
5. What would be your control?
The population in the body of water that lasks dissolved oxygen
6. What type of graph would be appropriate for this data set? Why?
Scatter plot graph! It can compare results that is independent from each other.
7. Graph the data from Table 4: Water Quality vs. Fish Population (found at the beginning
of this exercise).
Insert graph here:
8. Interpret the data from the graph made in Question 7.
68 % of the varaitaion in the population of the fish is due to dissolved oxygen.
Exercise 2: Testable Observations
Determine which of the following observations are testable. For those that are testable,
answer the following:
Determine if the observation is qualitative or quantitative.
Write a hypothesis and null hypothesis.
What would be your experimental approach?
This study source was downloaded by 100000902171055 from CourseHero.com on 12-09-2025 22:29:08 GMT -06:00
https://www.coursehero.com/file/102793711/BIO101L-Lab-1docx/
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit):
Exercise 1: Data Interpretation
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many
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 measured in units of ppm (parts per million). Examine the data
in Table 4 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.
Table 4: Water Quality vs. Fish Population
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
Post-Lab Questions
1. What patterns do you observe based on the information in Table 4?
When the oxygen dissolved at 12ppm, the fish population also increased as well. Also
when oxygen level reaches 14 ppm, the amount of fish decreases but then in rises
again.
2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the
water sample and the number of fish observed in the body of water.
When more ocygen is added to the water, the population of the fish will increase as
well.
3. What would your experimental approach be to test this hypothesis?
For the experiment, with the same amount of oxygen a different bodies of water
would be used. Then compare them to the fish population that is in water that has
different level of dissolved oxygen.
This study source was downloaded by 100000902171055 from CourseHero.com on 12-09-2025 22:29:08 GMT -06:00
https://www.coursehero.com/file/102793711/BIO101L-Lab-1docx/
, Lab 1 Introduction to Science BIO101
4. What would be the independent and dependent variables?
Indepent Variable-dissolved oxygen
Dependent Variable-# of the fish
5. What would be your control?
The population in the body of water that lasks dissolved oxygen
6. What type of graph would be appropriate for this data set? Why?
Scatter plot graph! It can compare results that is independent from each other.
7. Graph the data from Table 4: Water Quality vs. Fish Population (found at the beginning
of this exercise).
Insert graph here:
8. Interpret the data from the graph made in Question 7.
68 % of the varaitaion in the population of the fish is due to dissolved oxygen.
Exercise 2: Testable Observations
Determine which of the following observations are testable. For those that are testable,
answer the following:
Determine if the observation is qualitative or quantitative.
Write a hypothesis and null hypothesis.
What would be your experimental approach?
This study source was downloaded by 100000902171055 from CourseHero.com on 12-09-2025 22:29:08 GMT -06:00
https://www.coursehero.com/file/102793711/BIO101L-Lab-1docx/
