Modified True/False
Indicate
whether the statement is true or false. If false, change the identified word or phrase to make
the statement true.
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1.
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All organisms need energy to carry out life processes.
_________________________
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2.
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Homeostasis is the process by which plants use sunlight to make organic
compounds from carbon dioxide and water. _________________________
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3.
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Autotrophs make inorganic compounds that serve as food for them and for
almost all of the other organisms on Earth. _________________________
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4.
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Photosynthesis is a process that takes place in autotrophs.
_________________________
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5.
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Photosynthesis involves using energy to build organic molecules and
breaking down organic molecules in which energy is stored. _________________________
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6.
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Photosynthesis converts stable carbon dioxide molecules into oxygen, a
less stable carbon compound. _________________________
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7.
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Through the process of cellular respiration, cells make carbon in glucose into
stable carbon dioxide and produce energy. _________________________
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8.
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ATP is a portable form of energy “currency” inside cells.
_________________________
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9.
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In cells, chemical energy is gradually released in a series of chemical
compounds that are assisted by enzymes. _________________________
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10.
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The major light-absorbing pigment in plant photosynthesis is carotenoid.
_________________________
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11.
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The thylakoid membrane is folded in a way that produces flat, disc-like sacs
called stroma. _________________________
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12.
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Plant cells use light energy to make ATP and NADPH.
_________________________
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13.
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Plants get electrons to replace the excited electrons that leave chlorophyll
molecules by splitting water molecules. _________________________
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14.
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The final stage of photosynthesis during which sugar molecules are produced is
light dependent. _________________________
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15.
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The reactions that “fix” carbon dioxide are sometimes called dark
reactions. _________________________
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16.
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Most of the three-carbon sugars formed during the Calvin cycle are used
to regenerate the five-carbon compound that began the cycle. _________________________
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17.
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Carbon dioxide concentration is one of the environmental factors that
affect photosynthesis. _________________________
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18.
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Increasing light intensity increases the rate of photosynthesis only until all
the oxygen molecules in chloroplasts are being used. _________________________
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19.
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Glycolysis breaks down glucose into two pyruvates.
_________________________
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20.
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Glycolysis occurs during the second stage of cellular respiration.
_________________________
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21.
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Glycolysis is an aerobic process. _________________________
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22.
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During aerobic respiration, the breakdown of a molecule of glucose yields a net
of up to two molecules of ATP. _________________________
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23.
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The first stage of aerobic respiration is a series of biochemical reactions
called the Calvin cycle. _________________________
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24.
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Fermentation takes place in absence of carbon dioxide.
_________________________
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25.
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Lactic acid fermentation is an anaerobic process.
_________________________
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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26.
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Most of the energy used by life on Earth comes from the
a. | sun. |
c. | moon. | b. |
rotation of Earth. | d. |
weather. |
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27.
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Organisms that are not autotrophs
a. | get energy from inorganic molecules. | b. |
can survive without energy. | c. |
must consume other
organisms to get energy. | d. |
get energy from
sunlight. |
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28.
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Light energy is converted to chemical energy through the process of
a. | cellular respiration. |
c. | photosynthesis. | b. |
fermentation. | d. |
glycolysis. |
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29.
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Which of the following organisms do not carry out photosynthesis?
a. | plants |
c. | certain prokaryotes | b. |
algae | d. |
animals |
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30.
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The carbon cycle makes carbon compounds continuously available in an ecosystem
and delivers
a. | light energy to autotrophs. | b. |
water to all organisms. | c. |
carbon dioxide to
animals within the ecosystem. | d. |
chemical energy to organisms within the
ecosystem. |
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31.
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Which of the following statements about glucose is correct?
a. | Glucose is a less stable carbon compound than carbon dioxide is. | b. |
Glucose is a more
stable carbon compound than carbon dioxide is. | c. |
Glucose is produced during cellular
respiration. |
d. | Glucose is not a carbon compound. |
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32.
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ATP is composed of a nitrogenous base, a sugar, and
a. | one phosphate group. |
c. | three phosphate groups. | b. |
two phosphate
groups. | d. |
four phosphate
groups. |
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33.
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How many carbon dioxide molecules are produced during the cellular respiration
of two glucose molecules?
a. | two |
c. | six | b. |
four | d. |
twelve |
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34.
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chloroplasts : photosynthesis ::
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