Unit 2 Study Guide
Short Answer: 6 points of the exam will come from the following questions. The learning targets for this unit
are in bold. The questions below the learning targets are how we will assess whether or not you have met that
learning target.
Develop scientific questions, test hypotheses, and analyze data from scientific experiments.
1. Explain the difference between a prediction and a hypothesis.
2. Why is having a control group an important part of an experiment?
Describe the process of cellular respiration and its function in living organisms.
1. List the three main stages of cellular respiration in order. Where does each stage take place in the cell?
2.
Explain the relationship between CO2 output and physical activity.
Understand the processes of Photosynthesis and the types of organisms that use this process
3. What role does carbon dioxide play in photosynthesis and cellular respiration?
4.
How are heterotrophs different from autotrophs? How are autotrophs and heterotrophs connected?
Understand the nutritional needs of plants
5. A student exposed two plants to only red light and two plants to only green light. Which plants should
grow better? Why?
6.
List three materials that plants need in order to survive .
Understand the advantages of the characteristics/adaptations of different classifications of plants
7. Describe two advantages that gymnosperms have over bryophytes and two advantages that angiosperms
have over gymnosperms.
8.
Not all plants have vascular tissue. What caused the formation of vascular tissue in some plants to evolve
and why is it so common today?
Visual Analysis: 6 points on your exam will come from the questions below.
A student poured bromothymol blue indicator into three test tubes. Then he placed an aquatic plant in
two of the three test tubes, as shown in the figure below. He placed a stopper on each test tube and placed
them all in the dark for 24 hours. Bromothymol blue turns yellow in the presence of CO2.
1.
Apply Concepts What is the purpose of test tube 1? Why is this test tube important
to the experiment?
2.
Apply Concepts Looking at the experimental setup, when placed in the dark,
which process would you expect the organisms in the test tubes to carry out – cellular
respiration or photosynthesis? Write the balanced equation for this process.
3. Infer What is the purpose of Bromothymol blue in the experiment? How can the student use the indicator to draw
conclusions about the processes that the aquatic plants are carrying out? Explain.
4. Predict Assume that after 24 hours in the dark, the Bromothymol blue in test tubes 2 and 3 had turned yellow. The
student then placed test tube 3 in a sunny window. He left test tube 2 in the dark. Predict what color the solution in
each test tube will be after the next 24 hours.
5. Apply Concepts Explain your prediction in question 4 in terms of cellular respiration and photosynthesis.