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This activity contains 41 questions.

Question 1
1
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Which of these types of organisms produce the biosphere's food supply?
 
End of Question 1


Question 2
2
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In rosebushes, chlorophyll is responsible for the process of photosynthesis. Chlorophyll is located in _____.
 
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Question 3
3
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Carbon dioxide enters a leaf through the _____.
 
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Question 4
4
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Chlorophyll molecules are found in which part of the chloroplast?
 
End of Question 4


Question 5
5
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You could distinguish a granum from an inner mitochondrial membrane because the granum, but not the inner mitochondrial membrane, would _____.
 
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Question 6
6
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The source of the oxygen produced by photosynthesis has been identified through experiments using radioactive tracers. Follow the equation below and determine where oxygen comes from.

Figure_07-03B.jpg
 
End of Question 6


Question 7
7
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In photosynthesis, the oxygen atoms present in CO2 end up _____.
 
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Question 8
8
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In an experiment, a plant was given _____ containing radioactive 18O, and the radioactive oxygen atoms were used to make sugar.
 
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Question 9
9
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Cellular respiration and photosynthesis are similar in that both involve _____.
 
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Question 10
10
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The photosynthetic event known as the Calvin cycle occurs in the _____.
 
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Question 11
11
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The "photo-" part of the word photosynthesis refers to _____, whereas "-synthesis" refers to _____.
 
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Question 12
12
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Considering the wavelengths of light shown below, the pigments in the granum absorb mainly in which range?

Figure_07-06B.jpg
 
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Question 13
13
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The most important role of pigments in photosynthesis is to _____.
 
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Question 14
14
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Which of the following colors is most strongly reflected by chlorophyll?
 
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Question 15
15
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When chloroplast pigments absorb light, _____.
 
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Question 16
16
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The reaction center, antenna molecules, and primary electron acceptors that cluster in the thylakoid membrane form which structure?
 
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Question 17
17
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The synthesis of glucose by photosynthesis is an endergonic process. The source of the energy for the excited electrons is _____.
 
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Question 18
18
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The light reactions of photosynthesis generate high-energy electrons, which end up in _____. The light reactions also produce _____ and _____.
 
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Question 19
19
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Where do the electrons needed by photosystem II originate?
 
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Question 20
20
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As photosynthesis occurs in chloroplasts, O2 is produced from _____ via a series of reactions associated with _____.
 
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Question 21
21
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During photosynthesis, an electron transport chain is used to _____.
 
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Question 22
22
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Molecular oxygen is produced during _____.
 
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Question 23
23
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Light reactions are located in the thylakoid membrane because _____.
 
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Question 24
24
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Both mitochondria and chloroplasts _____.
 
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Question 25
25
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In addition to its function in mitochondria, the chemiosmotic mechanism is important for generating ATP during the _____.
 
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Question 26
26
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The energy used to produce ATP in the light reactions of photosynthesis comes from _____.
 
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Question 27
27
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In the Calvin cycle carbon dioxide provides _____, while ATP and NADPH provide _____ and _____, respectively.
 
End of Question 27


Question 28
28
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Although the reactions of the Calvin cycle are not directly dependent on light, they usually do not occur at night. Why?
 
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Question 29
29
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The Calvin cycle is a series of reactions that _____.
 
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Question 30
30
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NADP+ is required for photosynthesis because it _____.
 
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Question 31
31
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Rubisco is the _____.
 
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Question 32
32
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What is the role of NADP+ in photosynthesis?
 
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Question 33
33
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The final output of the Calvin cycle is _____.
 
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Question 34
34
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You have a large, healthy philodendron that you carelessly leave in total darkness while you are away on vacation. You are surprised to find that it is still alive when you return. What has the plant been using for an energy source while in the dark?
 
End of Question 34


Question 35
35
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A red chemical dye known as phenol red changes to yellow when CO2 is present. A small green plant seedling is placed in phenol red and then placed in the dark. Which of the following is most likely to occur?
 
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Question 36
36
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C4 plants have evolved different photosynthetic mechanisms. These plants _____.
 
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Question 37
37
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C4 plants fix carbon dioxide in the _____.
 
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Question 38
38
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C4 and CAM plants have adapted to living in environments where water loss is a problem. C4 plants fix carbon dioxide _____, whereas CAM plants fix carbon at _____.
 
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Question 39
39
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Solar radiation warms the surface of the planet and then is radiated back in the form of _____.
 
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Question 40
40
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Which of the following is a synthetic greenhouse gas?
 
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Question 41
41
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Which of the following may happen as a result of ozone depletion?
 
End of Question 41


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