Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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Figure
8-1
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1.
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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
D | | |
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2.
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Which
pathway represents the flow of electrons during photosynthesis? a. | H2O
® Photosystem I
® Photosystem
II | b. | O2
® ADP
® Calvin
cycle | c. | Photosystem I ® Calvin cycle ® NADPH | d. | H2O
® NADPH
® Calvin
cycle | | |
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3.
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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 | | |
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4.
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Plants take in the sun’s energy by absorbing a. | high-energy
sugars. | b. | chlorophyll a. | c. | chlorophyll
b. | d. | sunlight. | | |
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5.
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Which
region of the visible spectrum is not absorbed well by chlorophyll? a. | blue | b. | violet | c. | green | d. | red | | |
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6.
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Which
of the following is inside the thylakoid membrane? a. | electron
transport chain | b. | photosystem I | c. | ATP
synthase | d. | all of the above | | |
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7.
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Which
of the following is NOT a step in the light-dependent reactions? a. | High-energy
electrons move through the electron transport chain. | b. | Pigments in
photosystem II absorb light. | c. | ATP synthase allows H+ ions to pass through the
thylakoid membrane. | d. | ATP and NADPH are used to produce high-energy
sugars. | | |
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8.
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The
stroma is the space that surrounds a. | thylakoids. | b. | chloroplasts. | c. | plant cells. | d. | all of the
above | | |
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9.
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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. | | |
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10.
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The
Calvin cycle is another name for a. | light-independent reactions. | b. | light-dependent
reactions. | c. | photosynthesis. | d. | all of the
above | | |
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11.
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Jan
van Helmont concluded that plants gain most of their mass from a. | water. | b. | the soil. | c. | carbon dioxide
in the air. | d. | oxygen in the air. | | |
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12.
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Plants gather the sun’s energy with light-absorbing molecules
called a. | pigments. | b. | thylakoids. | c. | chloroplasts. | d. | glucose. | | |
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13.
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Which
of the following is false? a. | A chloroplast contains stroma. | b. | A stroma
contains a thylakoid. | c. | A granum contains several thylakoids. | d. | A thylakoid
contains chlorophyll. | | |
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14.
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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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15.
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Which
scientists showed that plants need light to grow? a. | van Helmont and Calvin | b. | Priestley and
Ingenhousz | c. | van Helmont and Priestley | d. | Priestley and
Calvin | | |
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16.
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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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17.
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Where
are photosystems I and II found? a. | in the stroma | b. | in the thylakoid
membrane | c. | in the Calvin cycle | d. | all of the
above | | |
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18.
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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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19.
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Suppose Priestley repeated his experiment using many kinds of plants besides mint, and
that when different plants were placed under the jar, the candle remained lighted for different
periods of time. What would be a logical conclusion from these experiments? a. | Different plants
require different amounts of water. | b. | Different plants release different amounts of carbon
dioxide. | c. | Different plants require different amounts of
light. | d. | Different plants release different amounts of
oxygen. | | |
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20.
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Ingenhousz showed that plants produce oxygen bubbles when exposed to a. | ATP. | b. | carbon dioxide. | c. | light. | d. | a burning candle. | | |
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21.
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Where
in the chloroplast is chlorophyll found? a. | in the stroma | b. | in the
thylakoid | c. | in the ATP | d. | in the
glucose | | |
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22.
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Organisms that cannot make their own food and must obtain energy from the foods they
eat are called a. | autotrophs. | b. | heterotrophs. | c. | thylakoids. | d. | plants. | | |
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23.
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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? a. | More sugars will be produced. | b. | Fewer sugars
will be produced. | c. | The same number of sugars will be produced but without carbon
dioxide. | d. | Carbon dioxide does not affect the production of high-energy
sugars in plants. | | |
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24.
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If
you continue to increase the intensity of light that a plant receives, what happens? a. | The rate of
photosynthesis increases with light intensity. | b. | The rate of
photosynthesis decreases with light intensity. | c. | The rate of
photosynthesis increases and then levels off. | d. | The rate of
photosynthesis does not change. | | |
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25.
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Which
of the following is NOT a true statement about ATP? a. | ATP consists of
ribose, adenine, and phosphate. | b. | ADP forms when ATP releases energy. | c. | ATP provides
energy for the mechanical functions of cells. | d. | Used ATP is
discarded by the cell as waste. | | |
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26.
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Which
of the following affects the rate of photosynthesis? a. | water | b. | temperature | c. | light
intensity | d. | all of the above | | |
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27.
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Which
of the following is an autotroph? a. | mushroom | b. | impala | c. | leopard | d. | tree | | |
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28.
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What
is a product of the Calvin cycle? a. | oxygen gas | b. | ATP | c. | high-energy sugar | d. | carbon dioxide
gas | | |
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29.
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A
granum is a a. | stack of
chloroplasts. | b. | stack of thylakoids. | c. | membrane
enclosing a thylakoid. | d. | photosynthetic pigment molecule. | | |
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30.
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In
the overall equation for photosynthesis, six molecules of carbon dioxide result in six molecules
of a. | glucose. | b. | water. | c. | oxygen. | d. | ATP. | | |
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Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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Figure
8-3
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31.
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If
you were to isolate the structure shown in Figure 8-3, it would appear green.
_________________________
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32.
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The
light-dependent reactions supply the Calvin cycle with CO2 and ATP.
_________________________
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Figure
8-1
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33.
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The
substance represented in Figure 8-1 is called ATP. _________________________
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34.
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The
Calvin cycle provides cells with compounds that can store energy for more than a few minutes.
_________________________
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35.
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During the light-dependent reactions, plants use the energy in ATP and NADPH to
build high-energy sugars. _________________________
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36.
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ATP
synthesis depends directly on the availability of light energy.
_________________________
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37.
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A
plant whose leaves are naturally yellow probably contains chlorophyll as well as other
light-absorbing pigments. _________________________
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38.
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If a
plant is placed in a greenhouse held at 40°C, the plant will probably increase its normal
rate of photosynthesis. _________________________
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39.
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If
you grind up the chloroplasts found in spinach leaves into a liquid solution, the solution will have
a green color. _________________________
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40.
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Plants gather the sun’s energy with light-absorbing molecules called
pigments. _________________________
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