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Campbell Biology, 10e (Reece)
Chapter 10 Photosynthesis
1) The process of photosynthesis probably originated _____
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2) In autotrophic bacteria, where is chlorophyll located?
A) in chloroplast membranes
B) in the ribosomes
C) in the nucleoid
D) in the infolded plasma membrane
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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A) only in the light but respire only in the dark
B) only in the dark but respire only in the light
C) only in the light but respire in light and dark
D) and respire only in the light
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 10
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In fact, it comes from _____
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A) glyceraldehyde 3-phosphate (G3P)
B) glucose
C) ribulose bisphosphate (RuBP)
D) O2
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 10
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A) autotrophs and heterotrophs
B) producers and primary consumers
C) photosynthesizers
D) autotrophs
Answer: D
Bloom's Taxonomy: Synthesis/Evaluation
Section: 10
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A) splitting water molecules
B) chemiosmosis
C) the electron transfer system of photosystem I
D) the electron transfer system of photosystem II
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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B) Only heterotrophs have mitochondria
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D) Only heterotrophs require oxygen
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9) The figure shows the absorption spectrum for chlorophyll a and the action spectrum for
photosynthesis
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B) Oxygen given off during photosynthesis interferes with the absorption of light
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D) Aerobic bacteria take up oxygen, which changes the measurement of the rate of
photosynthesis
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10) What wavelength of light in the figure is most effective in driving photosynthesis?
A) 420 mm
B) 575 mm
C) 625 mm
D) 730 mm
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 10
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Use the following information to answer the questions below
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Engelmann illuminated a filament of algae with light that passed through a prism,
thus exposing different segments of algae to different wavelengths of light
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He noted that the largest groups
were found in the areas illuminated by the red and blue light
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B) Bacteria congregated in these areas because these areas had the most oxygen being released
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D) Bacteria congregated in these areas due to an increase in the temperature caused by an
increase in photosynthesis
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12) An outcome of Engelmann's experiment was to help determine the relationship between
_____
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A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the
solar system
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Since the
spaceship will be too far from the sun for photosynthesis, an artificial light source will be
needed
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14) Suppose a plant has a unique photosynthetic pigment and the leaves of this plant appear to be
reddish yellow
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15) Halobacterium has a photosynthetic membrane that appears purple
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(That is, the Halobacterium
action spectrum has a peak where the green plant action spectrum has a trough
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B) This arrangement enables the plant to absorb light energy of a variety of wavelengths
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D) They enable the reaction center to excite electrons to a higher energy level
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17) If pigments from a particular species of plant are extracted and subjected to paper
chromatography, which of the following is most likely?
A) Paper chromatography for the plant would isolate a single band of pigment that is
characteristic of that particular plant
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C) The isolated pigments would be some shade of green
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Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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This is because chlorophyll is
degraded and _____
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19) What event accompanies energy absorption by chlorophyll (or other pigment molecules of
the antenna complex)?
A) ATP is synthesized from the energy absorbed
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C) Electrons are stripped from NADPH
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Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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20) As electrons are passed through the system of electron carriers associated with photosystem
II, they lose energy
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B) It is lost as heat
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D) It is used to phosphorylate NAD+ to NADPH, the molecule that accepts electrons from
photosystem I
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21) The final electron acceptor associated with photosystem I is _____
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22) The electrons of photosystem II are excited and transferred to electron carriers
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23) In the thylakoid membranes, the pigment molecules in a light-harvesting complex _____
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24) Which of the following are directly associated with photosystem I?
A) receiving electrons from the thylakoid membrane electron transport chain
B) generation of molecular oxygen
C) extraction of hydrogen electrons from the splitting of water
D) passing electrons to the cytochrome complex
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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25) Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to
survive
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A) determine if they have thylakoids in the chloroplasts
B) test for liberation of O2 in the light
C) test for CO2 fixation in the dark
D) do experiments to generate an action spectrum
Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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2
27) As a research scientist, you measure the amount of ATP and NADPH consumed by the
Calvin cycle in 1 hour
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Where did the extra ATP molecules come from?
A) photosystem II
B) photosystem I
C) cyclic electron flow
D) linear electron flow
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 10
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This damage will most directly affect the _____
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30) In mitochondria, chemiosmosis moves protons from the matrix into the intermembrane
space, whereas in chloroplasts, chemiosmosis moves protons from the _____
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2
31) Which of the following statements best describes the relationship between photosynthesis
and respiration?
A) Respiration runs the biochemical pathways of photosynthesis in reverse
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D) Photosynthesis is catabolic; respiration is anabolic
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32) In photosynthetic cells, synthesis of ATP by the chemiosmotic mechanism occurs during
_____
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A) during photosynthesis
B) during respiration
C) during photosynthesis and respiration
D) in neither photosynthesis nor respiration
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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B) They are inversely related
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D) They are separate phenomena
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35) P680+ is said to be the strongest biological oxidizing agent
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B) It is the molecule that transfers electrons to plastoquinone (Pq) of the electron transfer system
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D) It obtains electrons from the oxygen atom in a water molecule, so it must have a stronger
attraction for electrons than oxygen has
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36) Carotenoids are often found in foods that are considered to have antioxidant properties in
human nutrition
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B) They protect against oxidative damage from excessive light energy
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D) They reflect orange light and enhance red light absorption by chlorophyll
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A) the light reactions alone
B) the Calvin cycle alone
C) the light reactions and the Calvin cycle
D) neither the light reactions nor the Calvin cycle
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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A) life and respiratory metabolism
B) cyanobacteria using photosystem II
C) chloroplasts in photosynthetic eukaryotic algae
D) land plants
Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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A) substrate-level phosphorylation in glycolysis
B) oxidative phosphorylation in cellular respiration
C) the Calvin cycle
D) reduction of NADP+
Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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41) A gardener is concerned that her greenhouse is getting too hot from too much light and seeks
to shade her plants with colored translucent plastic sheets, the color of which allows passage of
only that wavelength
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Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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42) A flask containing photosynthetic green algae and a control flask containing water with no
algae are both placed under a bank of lights, which are set to cycle between 12 hours of light and
12 hours of dark
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Predict what
the relative dissolved oxygen concentrations will be in the flask with algae compared to the
control flask
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A) always be higher
B) always be lower
C) be higher in the light, but the same in the dark
D) be higher in the light, but lower in the dark
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 10
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44) Where does the Calvin cycle take place?
A) stroma of the chloroplast
B) thylakoid membrane
C) interior of the thylakoid (thylakoid space)
D) outer membrane of the chloroplast
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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After phosphorylation and
reduction produces glyceraldehyde 3-phosphate (G3P), what more needs to happen to complete
the Calvin cycle?
A) addition of a pair of electrons from NADPH
B) regeneration of ATP from ADP
C) regeneration of RuBP
D) regeneration of NADP+
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 10
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Use the accompanying figure and the molecules labeled A, B, C, D, and E to answer the
following questions
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If the carbon atom of each of the incoming CO2 molecules is labeled
with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after
one cycle?
A) C only
B) B, C, D, and E
C) C, D, and E only
D) B and C only
Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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48) Refer to the figure
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They then measured the concentrations of various metabolites
immediately following the manipulation
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B) The CO2 acceptor concentration would increase when either the CO2 or light are cut off
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D) The CO2 acceptor concentration would decrease when the CO2 is cut off, but increase when
the light is cut off
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49) Which of the following sequences correctly represents the flow of electrons during
photosynthesis?
A) NADPH → O2 → C O2
B) H2O → NADPH → Calvin cycle
C) NADPH → chlorophyll → Calvin cycle
D) NADPH → electron transport chain → O2
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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51) What compound provides the reducing power for Calvin cycle reactions?
A) ATP
B) NADH
C) NADP+
D) NADPH
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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52) What would be the expected effect on plants if the atmospheric CO2 concentration was
doubled?
A) All plants would experience increased rates of photosynthesis
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C) C4 plants would have faster growth; C3 plants would be minimally affected
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Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 10
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B) They use PEP carboxylase to initially fix CO2
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D) They exclude oxygen from their tissues
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54) CAM plants keep stomata closed in the daytime, thus reducing loss of water
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A) fix CO2 into organic acids during the night
B) fix CO2 into sugars in the bundle-sheath cells
C) fix CO2 into pyruvate in the mesophyll cells
D) use photosystem I and photosystem II at night
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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Why?
A) Each one minimizes both water loss and rate of photosynthesis
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C) Both minimize photorespiration but expend more ATP during carbon fixation
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Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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56) If plant gene alterations cause plants to be deficient in photorespiration, what would most
probably occur?
A) Photosynthetic efficiency would be reduced at low light intensities
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C) There would be more light-induced damage to the cells
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Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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A) can continue to fix CO2 even at lower CO2 concentrations and higher oxygen concentrations
B) have higher rates of photorespiration
C) do not use rubisco for carbon fixation
D) make a four-carbon compound, oxaloacetate, which is then delivered to the citric acid cycle
in mitochondria
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 10
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Use the following figure to answer the questions below
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B) It represents an adaptation that maximizes photorespiration
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D) It represents a CAM photosynthetic system
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59) Referring to the accompanying figure, oxygen would inhibit the CO2 fixation reactions in
_____
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A) generates carbon dioxide and consumes ATP and oxygen
B) generates ATP and sugars and consumes oxygen and carbon dioxide
C) generates oxygen and consumes ATP, carbon dioxide, and sugars
D) consumes carbon dioxide and generates ATP, sugars, and oxygen
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 10
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They punched 40 leaf disks from spinach leaves and used a syringe partially
filled with water to pull the gases from the leaf disks so that all leaf disks sunk to the bottom of
the syringe
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All leaf disks were resting on the bottom of the
cups when the experiment began
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All cups were placed 0
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A large beaker of water was placed between the light and the cups to act as a heat sink to prevent
a change in temperature
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Trial
1
2
3
4

Grams of
baking soda
Wattage of light Disks floating at
(CO22 source)
bulb
10 minutes
0
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5
50
5
0
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A) Cup 1 had a low rate of photosynthesis because 0
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B) Cup 2 had the highest rate of photosynthesis because 5 disks were floating at the end of 10
minutes using a 50 watt light bulb
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D) Cup 4 had the slowest rate of photosynthesis because it had the least baking soda
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