chapter8 review
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1. Which of the following is an autotroph?
a. mushroom b. impala c. leopard d. tree
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2. What are the three parts of an ATP molecule?
a. adenine, thylakoids, stroma b. stroma, grana, chlorophyll c. adenine, ribose, phosphate d. NADH,
NADPH, and FADH2
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3. Energy is released from ATP when
a. a phosphate group is added. b. adenine bonds to ribose. c. ATP is exposed to sunlight. d. a phosphate
group is removed.
Figure 8-1
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4. Look at Figure 8-1. All of the following are parts of an
ADP molecule EXCEPT
a. structure A. b. structure B. c. structure C.
d. structure D.
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5. Which structures shown in Figure 8-1 make up an ATP
molecule?
a. A and B b. A, B, and C c. A, B, C, and D d. C and
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6. In Figure 8-1, between which parts of the molecule must the bonds be broken to form an ADP molecule?
a. A and B b. B and C c. C and D d. all of the above
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7. 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
a. oxygen. b. carbon dioxide. c. ATP. d. vaporized water.
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8. Photosynthesis uses sunlight to convert water and carbon dioxide into
a. oxygen. b. high-energy sugars. c. ATP and oxygen. d. oxygen and high-energy sugars.
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9. Plants gather the sun’s energy with light-absorbing molecules called
a. pigments. b. thylakoids. c. chloroplasts. d. glucose.
D
____ 10. Most plants appear green because chlorophyll
a. does not absorb green light. b. reflects violet light. c. absorbs green light. d. none of the above
____ 11. The stroma is the space that surrounds
a. thylakoids. b. chloroplasts. c. plant cells. d. all of the above
____ 12. Where do the light-dependent reactions take place?
a. in the stroma b. outside the chloroplasts c. in the thylakoid membranes d. only in chlorophyll molecules
____ 13. The Calvin cycle is another name for
a. light-independent reactions. b. light-dependent reactions. c. photosynthesis. d. all of the above
____ 14. What is a product of the Calvin cycle?
a. oxygen gas b. ATP c. high-energy sugar d. carbon dioxide gas
____ 15. Which of the following affects the rate of photosynthesis?
a. water b. temperature c. light intensity d. all of the above
A student prepared two beakers with identical sprigs of a water plant as shown below. She placed one beaker
in the shade and the other beaker beside a fluorescent lamp. She then
systematically changed the distance of the beaker from the lamp. She
counted the bubbles given off by each sprig of the water plant. Shown here
is the graph of the data for the beaker she placed in the light.
Figure 8-4
18.
Which beaker is the student’s control?
19. Look at Figure 8-4. If the student later tested the air bubbles collected in the test tube, what would she find
they are made of? How do you know?
20. Look at the graph in Figure 8-4. At what distance from the light source was the greatest number of bubbles
produced?
21. Look at the graph in Figure 8-4. What do the student’s data show?
22. If the lamp were placed closer than 5 centimeters from the water plant, would the plant give off many more
bubbles? Why or why not?
Figure 8-6
23. What process is shown in Figure 8-6?
24. What structure is shown in Figure 8-6?
25. Look at Figure 8-6. What are the products of the light-dependent reactions?
26. What are the products of the Calvin cycle shown in Figure 8-6?
27. In Figure 8-6, what chemical is converted to sugar?
chapter8 review
Answer Section
MULTIPLE CHOICE
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15.
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D
C
D
D
C
C
A
D
A
A
A
C
A
C
D
OTHER
18. ANS:
The beaker she placed in the shade is the control.
19. ANS:
The air bubbles are probably oxygen gas. Jan Ingenhousz showed that plants produce oxygen bubbles in the
light but not in the dark.
20. ANS:
10 cm
21. ANS:
The student’s data show that as the light gets closer to the water plant, the water plant gives off more bubbles.
22. ANS:
Probably not; the graph shows that the effect is leveling off. Also, we know that light intensity increases the
rate of photosynthesis up to a certain point and then levels off.
23. ANS:
photosynthesis
24. ANS:
a chloroplast
25. ANS:
Oxygen gas, ATP, and NADPH are the products of the light-dependent reactions.
26. ANS:
sugars
27. ANS:
carbon dioxide