Group Members (In Alphabetic Order by Last Name & Separated by a Comma)

Cellular RespirationLAST NAME 1

Student Name

Group Members (in alphabetic order by last name & separated by a comma)

11/14/2017

Mr. Martin & Mr. Funsch

Honor’s Biology – Period ?

Honor’s Geometry – Period ?

TITLE

The effect of ______on the ______produced by house crickets (Achetadomestica) as a S.T.E.M. investigation of cellular respiration

INTRODUCTION

This section should be written using active voice and NO personal pronouns. For example, DO NOT SAY “I/we studied the effect…” but rather “The effect that was studied…”. Write this intro by stating what was done in this experiment. Use the bullets below as guidelines but write using complete sentences.

• identify the phenomenon that was studied, explain what was done in this experiment
• include relevant background information
• Balanced equation of Cellular Respiration
• explain how cellular respiration can be measured (how do you know that it is happening)
• include a diagram of cellular respiration – you must discuss the figure in your introduction
• complete the table of variables below

MATERIALS AND METHODS

• list the materials that were used (Vernier CO2or O2sensor, Temperature Probe and Data Logger were used)
• insert a drawing/sketch/picture of your experimental set up (label Figure and provide photo source credit)

[Note this is separate from the pictures used in your introduction]

• describe the steps that were performed – use a numbered list to outline what was done

RESULTS

• insert your data into table 2 below
• edit the headings to reflect your groups actual control and experimental groups and the gas concentration you measured for.

• Edit and insert data to the scatter plots below (use the data from)table 2 above. Right click on graph to edit data. Graph shown below should include:

AR Johnson Honors Biology and Honors Geometry

Cellular RespirationLAST NAME 1

• graph title (edit)
• axis title
• units (x & y axis must have correct units)
• line of best fit (trendline)
• Display equation on graph

Figure 2: Control Group

Figure 3: Experimental Group

In this section you will calculate the slope of the line of best fit and the y-intercept for each scatter plot. Refer to the equation of the line of best fit that you have displayed on the graph above.

Predicting a Value:

Using the equation of the line of best fit predict the values of gas at the following times by completing the table. Justify your prediction.

You must include at least TWO photographs that your group took during the experiment. Insert your pictures into the table below.

DISCUSSION

Answer the questions below USING COMPLETE SENTENCES in your report. Leave the questions in the lab report

1. Interpret the slope of each graph (condition) in context and compare the two slopes. (Sample answer for interpretation of slope: For the [control condition], CO2 / O2 concentration is predicted to increase / decrease by slope value (m) for each additional second).
2. Compare each Y-intercept (PREDICTED initial value) to the actual initial value (from the data table) for each condition (control and experimental).

1. What evidence do you have that cellular respiration is occurring?
2. Why does cellular respiration occur? Are there any situations when living cells are not respiring?
3. Why might some living cells respire more than others?
4. What organisms could be studied under a similar experiment that would have a lower rate of respiration? Explain your answer.

STEM CONNECTION

In a few short paragraphs discuss how you used the various S.T.E.M. disicplines in this lab. Try to show or establish connections between these subjects. The idea and spirit behind S.T.E.M. is that each subject supports and helps the overs. Think about and discuss how these subjects help you answer the question of this lab (How do environmental conditions affect Cellular Respiration? How is cellular respiration measured?)

LITERATURE CITED

• APA format

AR Johnson Honors Biology and Honors Geometry