AP Bio Ch. 10 Study Guide Test Your Knowledge
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which of the following processes or structures is mismatched with its
location?
a. | light reactions - grana | b. | electron transport chain - thylakoid
membrane | c. | Calvin cycle - stroma | d. | ATP synthase - double membrane surrounding
chloroplast | e. | splitting of water - thylakoid space |
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2.
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Photosynthesis is a redox process in which
a. | CO2 is reduced and water is oxidized | b. | NADP+ is reduced and
RuBP is oxidized | c. | CO2, NADP+, and water are reduced | d. | O2 acts
as an oxidizing agent and water acts as a reducing agent | e. | G3P is reduced and
the electron transport chain is oxidized |
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3.
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Which of the following statements is false?
a. | When isolated chlorophyll molecules absorb photons, their electrons fall back to
ground state, giving off heat and light | b. | Accessory pigments, cyclic electron flow, and
photorespiration may all contribute to photoprotection, protecting plants from the detrimental
effects of intense light | c. | In the cyclic electron flow of purple sulfer
bacteria, the electron transport chain pumps H+ across a membrane, creating a proton motive force
used in ATP synthesis | d. | In both photosynthetic prokaryotes and
eukaryotes, ATP synthases catalyze the production of ATP within the cytosol of the
cell | e. | In sulfer bacteria, H2S is the hydrogen (and thus electron) source for
photosynthesis |
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4.
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A spectrophotometer can be used to measure
a. | the absorption spectrum of a substance | b. | the action spectrum of a
reaction | c. | the amount of energy in a photon | d. | the wavelength of visible
light | e. | the efficiency of photosynthesis |
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5.
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Accessory pigments within chloroplasts are responsible for
a. | driving the splitting of water molecules | b. | absorbing photons of
different wavelengths of light and passing that energy to P680 or P700 | c. | providing electrons
to the reaction-center chlorophyll after photoexcited electrons pass to NADP+ | d. | pumping H+ across
the thylakoid membrane to create a proton-motive force | e. | anchoring chlorophyll a within the reaction
center |
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6.
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The following is an absorption spectrum for an unknown pigment molecule. What
color would this pigment appear to you?
a. | violet | b. | blue | c. | green | d. | yellow | e. | red |
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7.
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Linear electron flow along with chemiosmosis in the chloroplast results in the
formation of
a. | ATP only | b. | ATP and NADPH | c. | ATP and
G3P | d. | ATP and O2 | e. | ATP, NADPH, and
O2 |
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8.
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The chlorophyll known as P680+ has its electron “holes” filled by
electrons from
a. | photosystem I | b. | photosystem II | c. | water | d. | NADPH | e. | accessory
pigments |
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9.
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Which of the following substances is / are the final electron acceptors for the
electron transport chains in the light reactions of photosynthesis and in cellular
respiration?
a. | O2 in both | b. | CO2 in both | c. | H2O in
the light reactions, and O2 in respiration | d. | P700 and NAD+ in the light reactions, and NAD+
or FAD in respiration | e. | NADP+ in the light reactions, and O2
in respiration |
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10.
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In the chemiosmotic synthesis of ATP in a chloroplast, H+ diffuses through the
ATP synthase
a. | from the stroma into the thylakoid space | b. | from the thylakoid
space into the stroma | c. | from the intermembrane space space into the
matrix | d. | from the cytoplasm into the intermembrane space | e. | from the matrix into
the stroma |
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11.
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Which of the following parts of an illuminated plant cell would you expect to
have the lowest pH?
a. | nucleus | b. | cytosol | c. | chloroplast | d. | stroma of chloroplast | e. | thylakoid
space |
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12.
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A difference between electron transport in photosynthesis and respiration is
that in photosynthesis,
a. | NADPH rather than NADH passes the electrons to the electron transport
chain | b. | ATP synthase releases ATP into the stroma rather than into the
cytosol | c. | light provides the energy to push electrons to the top of the electron chain, rather
than energy from the oxidation of food molecules | d. | an H+ concentration gradient rather than a
proton-motive force drives the phosphorylation of ATP | e. | Both a and c are
correct |
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13.
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How does the cyclic electron flow differ from linear electron flow?
a. | No NADPH is produced by cyclic electron flow | b. | No O2 is produced by
cyclic electron flow | c. | The cytochrome complex in the electron
transport chain is not involved in cyclic electron flow | d. | Both a and b are
correct | e. | a, b, and c are correct |
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14.
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Chloroplasts can make carbohydrate in the dark if provided with
a. | ATP, NADPH, and CO2 | b. | an artificially induced proton
gradient | c. | organic acids or four-carbon compounds | d. | a source of hydrogen | e. | photons and
CO2 |
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15.
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How many of the turns of the Calvin cycle does it take to produce one molecule
of glucose?
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16.
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Six molecules of G3P formed from the fixation of 3CO2 in the Calvin
cycle are used to produce
a. | three molecules of glucose | b. | three molecules of RuBP and one
G3P | c. | one molecule of glucose and four molecules of 3-phosphoglycerate | d. | one G3P and three
four-carbon intermediates | e. | none of the above, because three molecules of
G3P result from three turns of the Calvin cycle |
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17.
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Both NADPH and ATP from the light reactions are needed
a. | in the carbon fixation stage to provide energy and reducing power to
RuBisCO | b. | to regenerate three RuBP from five G3P | c. | to combine two molecules of G3P to produce
glucose | d. | to reduce 3-phosphoglycerate to G3P | e. | to reduce the H+ concentration in the stroma
and contribute to the proton-motive force |
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18.
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Rubisco
a. | reduces CO2 to G3P | b. | regenerates RuBP with the aid of
ATP | c. | combines electrons and H+ to reduce NADP+ to NADPH | d. | adds CO2
to RuBP in the carbon fixation stage | e. | transfers electrons from NADPH to
1,3-bisphosphoglycerate to produce G3P |
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19.
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In C4 plants,
a. | initial carbon fixation takes place in the mesophyll cells | b. | photorespiration
requires more energy than it does in C3 plants | c. | the Calvin cycle, which takes place in the
bundle-sheath cells, uses PEP carboxylase instead of RuBisCO because of its greater affinity for
CO2 | d. | a and b are correct | e. | a and c are
correct |
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20.
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CAM plants avoid photorespiration by
a. | keeping their stomata closed during the day | b. | performing the
Calvin cycle at night | c. | fixing CO2 into four-carbon
compounds in the mesophyll, which then releases CO2 in the bundle-sheath
cells | d. | storing water in their succulent stems and leaves | e. | fixing
CO2 into organic acids during the night, which then provide CO2 during the
day |
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21.
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In green plants, most of the ATP for synthesis of proteins, cytoplasmic
streaming, and other cellular activities comes directly from
a. | photosystem I | b. | photosystem II | c. | the Calvin
cycle | d. | oxidative phosphorylation | e. | photophosphorylation |
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Matching
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Matching 22-27 a. | respiration | c. | both respiration
and photosynthesis | b. | photosynthesis | d. | neither respiration nor
photosynthesis |
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22.
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Chemiosmotic synthesis of ATP
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23.
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Reduction of oxygen
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24.
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Reduction of CO2
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25.
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Reduction of NAD+
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26.
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Oxidation of NADP+
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27.
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Oxidative phosphorylation
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