Cellular Respiration Virtual Lab
AP Biology
Name: _________________________________
Period: ________
Note: due to time constraints and lack of equipment, we will be learning about this lab in a
virtual environment instead of in the classroom.
Go to the Pearson Lab Bench site, with this url:
http://www.phschool.com/science/biology_place/labbench/
Choose “Lab 5, Cell Respiration”
1. Read through the introduction, key concepts, and design of the experiment, answering
the following as you go through the experiment:
a. What are some processes in plants that require ATP?
b. In this experiment, we are measuring the rate of cellular respiration by measuring
which variable?
c. What is the KOH used for?
d. Sketch a respirometer and label its important features.
e. Looking at the picture of the experimental setup, complete the table below:
Vial 1
Vial 2
Vial 3
Vial 4
Vial 5
Contents
Temperature
f. How do you ensure that each vial has an equal volume?
g. What is the purpose of the vial with only the glass beads?
h. What is the pipette reading in the picture?
i. What two temperatures are being used in this experiment?
Vial 6
Cellular Respiration Virtual Lab
AP Biology
Name: _________________________________
Period: ________
j. Read the respirometers below and determine the rate of respiration.
2. Self-Quiz
Please write you your answers to the self-quiz questions (don’t just say “a” or “c”)
1. Which of the following is a true statement based on the data?
2. What is the rate of oxygen consumption in germinating corn at 12 degrees C?
3. Which of the following conclusions is supported by the data?
4. What is the role of KOH in this experiment?
5. Describe the relationship between temperature and consumption of oxygen.
6. On a separate piece of paper, create a graph illustrating the data below:
Time (min)
0
5
10
15
20
Temperatures
10 degrees
0.0
0.25
0.5
0.7
0.9
18 degrees
0.0
0.6
0.9
1.2
1.6
25 degrees
0.0
0.9
1.4
1.8
2.4
*Note, for your lab report, use the data table from the pre-lab as your data table. Include all
normal parts of the lab report, and pretend that you actually did it in class.