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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1.
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If an
animal cell stops carrying out cellular respiration, it will die.
_________________________
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2.
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The
products of glycolysis are 2 ATP, 2 NADH, and 2 pyruvic acid molecules.
_________________________
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3.
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Either cellular respiration or fermentation can be used to release energy, depending
on the presence of carbohydrates. _________________________
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Figure
9-1
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4.
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The
pathway labeled A in Figure 9-1 is called glycolysis.
______________________________
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5.
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If
carbon dioxide is present, the pathway labeled C in Figure 9-1 usually will not occur.
_________________________
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6.
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The
Krebs cycle releases energy in the form of ATP. _________________________
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7.
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Without the Krebs cycle, the electron transport chain would produce very few
ATPs. _________________________
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8.
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The
first few seconds of intense exercise use up the cell’s stores of fat.
_________________________
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9.
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During the course of a long race, a person’s muscle cells will use both
cellular respiration and lactic acid fermentation to produce ATP.
_________________________
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10.
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During photosynthesis, energy is stored in the form of fats.
_________________________
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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11.
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Which
of the following is the correct sequence of events in cellular respiration? a. | glycolysis
® fermentation
® Krebs
cycle | b. | Krebs cycle ® electron transport ® glycolysis | c. | glycolysis
® Krebs cycle
® electron
transport | d. | Krebs cycle ® glycolysis ® electron transport | | |
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12.
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Which
of the following is released during cellular respiration? a. | oxygen | b. | air | c. | energy | d. | lactic
acid | | |
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13.
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Cellular respiration uses one molecule of glucose to produce a. | 2 ATP
molecules. | b. | 34 ATP molecules. | c. | 36 ATP
molecules. | d. | 38 ATP molecules. | | |
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14.
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Cellular respiration releases energy by breaking down a. | food
molecules. | b. | ATP. | c. | carbon dioxide. | d. | water. | | |
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15.
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What
are the reactants in the equation for cellular respiration? a. | oxygen and
lactic acid | b. | carbon dioxide and water | c. | glucose and
oxygen | d. | water and glucose | | |
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16.
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Which
of these is a product of cellular respiration? a. | oxygen | b. | water | c. | glucose | d. | all of the
above | | |
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17.
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Which
of these processes takes place in the cytoplasm of a cell? a. | glycolysis | b. | electron transport | c. | Krebs
cycle | d. | all of the above | | |
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18.
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Glycolysis provides a cell with a net gain of a. | 2 ATP
molecules. | b. | 4 ATP molecules. | c. | 18 ATP
molecules. | d. | 36 ATP molecules. | | |
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19.
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The
starting molecule for glycolysis is a. | ADP. | b. | pyruvic acid. | c. | citric
acid. | d. | glucose. | | |
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20.
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Glycolysis requires a. | an energy input. | b. | oxygen. | c. | hours to produce many ATP molecules. | d. | NADP+. | | |
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21.
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Which
of the following acts as an electron carrier in cellular respiration? a. | NAD+ | b. | pyruvic acid | c. | ADP | d. | ATP | | |
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22.
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Lactic acid fermentation occurs in a. | bread dough. | b. | any environment
containing oxygen. | c. | muscle cells. | d. | mitochondria. | | |
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23.
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The
two main types of fermentation are called a. | alcoholic and aerobic. | b. | aerobic and
anaerobic. | c. | alcoholic and lactic acid. | d. | lactic acid and
anaerobic. | | |
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24.
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One
cause of muscle soreness is a. | alcoholic fermentation. | b. | glycolysis. | c. | lactic acid fermentation. | d. | the Krebs
cycle. | | |
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25.
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Which
process is used to produce beer and wine? a. | lactic acid fermentation | b. | glycolysis | c. | alcoholic fermentation | d. | the Krebs
cycle | | |
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26.
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The
conversion of pyruvic acid into lactic acid requires a. | alcohol. | b. | oxygen. | c. | ATP. | d. | NADH. | | |
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27.
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Cellular respiration is called an aerobic process because it requires a. | light. | b. | exercise. | c. | oxygen. | d. | glucose. | | |
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28.
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The
starting molecule for the Krebs cycle is a. | glucose. | b. | NADH. | c. | pyruvic acid. | d. | coenzyme
A. | | |
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29.
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The
Krebs cycle does not occur if a. | oxygen is present. | b. | fermentation
occurs. | c. | glycolysis occurs. | d. | carbon dioxide
is present. | | |
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30.
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During one turn, the Krebs cycle produces a. | oxygen. | b. | lactic acid. | c. | electron
carriers. | d. | glucose. | | |
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31.
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The
Krebs cycle starts with a. | lactic acid and yields carbon
dioxide. | b. | glucose and yields 32 ATPs. | c. | pyruvic acid and
yields lactic acid or alcohol. | d. | pyruvic acid and yields carbon
dioxide. | | |
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32.
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The
electron transport chain can be found in a. | prokaryotes. | b. | animals. | c. | plants. | d. | all of the
above | | |
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33.
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Each
pair of high-energy electrons that moves down the electron transport chain provides enough energy
to a. | transport water
molecules across the membrane. | b. | convert 3 ADP molecules into 3 ATP
molecules. | c. | convert carbon dioxide into water
molecules. | d. | break glucose into pyruvic acid. | | |
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34.
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Breathing heavily after running a race is your body’s way of a. | making more
citric acid. | b. | repaying an oxygen debt. | c. | restarting
glycolysis. | d. | recharging the electron transport
chain. | | |
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35.
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The
energy needed to win a 2-minute footrace is produced mostly by a. | lactic acid
fermentation. | b. | cellular respiration. | c. | using up stores
of ATP. | d. | breaking down fats. | | |
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36.
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Which
statement mainly explains why even well-conditioned athletes have to pace themselves for athletic
events that last several hours? a. | Lactic acid fermentation can cause muscle
soreness. | b. | Heavy breathing is needed to get rid of lactic
acid. | c. | Cellular respiration releases energy more slowly than
fermentation does. | d. | all of the above | | |
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37.
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All
of the following are sources of energy during exercise EXCEPT a. | stored
ATP. | b. | alcoholic
fermentation. | c. | lactic acid fermentation. | d. | cellular
respiration. | | |
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38.
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Which
process does NOT release energy from glucose? a. | glycolysis | b. | photosynthesis | c. | fermentation | d. | cellular
respiration | | |
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39.
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How
are cellular respiration and photosynthesis almost opposite processes? a. | Photosynthesis
releases energy, and cellular respiration stores energy. | b. | Photosynthesis
removes carbon dioxide from the atmosphere, and cellular respiration puts it
back. | c. | Photosynthesis removes oxygen from the atmosphere, and cellular
respiration puts it back. | d. | all of the above | | |
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40.
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The
products of photosynthesis are the a. | products of cellular respiration. | b. | reactants of
cellular respiration. | c. | products of glycolysis. | d. | reactants of
fermentation. | | |
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