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Name: _____________________________________________ Class: _______________ Date: ___________
Biology 252 Cell Energetics Study Guide
1. Organisms, such as plants, that make their own food are called _______________________________.
2. Organisms that cannot make their own food and must obtain energy from the foods they eat are called
_______________________.
3. A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being
collected is probably ____________________.
4. Plants gather the sun’s energy with light-absorbing molecules called __________________________.
5. Where in the chloroplast are the light-dependent reactions taking place? ________________________.
6. The Calvin cycle is another name for _____________________________.
7. If carbon dioxide is removed from a plant’s environment, what would you expect to happen to the plant’s
production of high-energy sugars? ________________________________________________________________
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8. What are the factors that affect the rate of photosynthesis? _____________________________________________
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9. List the events of aerobic respiration in order. _______________________________________________________
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10. Fill in the equation for aerobic cellular respiration.
a. __________ + ____________  ______________ + _____________ + ____________
Reactants
Products
11. Cellular respiration releases energy by breaking down _________________________________.
12. The two main types of fermentation are called _________________________ and ___________________
fermentation.
13. Cellular respiration is called an aerobic process because it requires __________________________________.
14. How are cellular respiration and photosynthesis almost opposite processes?
______________________________
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15. _________________is to chloroplasts as cellular respiration is to _____________________.
16. The products of photosynthesis are _____________________ and _____________________.
17.
A student poured a solution of bromthymol blue indicator into three test tubes. Then, he placed an aquatic plant in
two of the test tubes, as shown below. He placed a stopper on each test tube and placed test tubes 1 & 2 in the dark
and test tube 3 on a sunny window sill for 24 hours. Bromthymol blue turns from blue to yellow in the presence of
CO2.
Figure 9-4
18. What is the purpose of the bromthymol blue in Figure 9-4? ____________________________________________
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19. Predict the color of the bromothymol blue in each test tubes in Figure 9-3 after 24 hours.
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20. Look at Figure 9-4. Which process or processes would you expect to occur in each test tube —cellular respiration,
photosynthesis, neither, or both? Explain your reasoning for each tube.
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21. Describe the relationship between photosynthesis and cellular respiration.
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