Question 1

The H+ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Accepted Answer

A)   enters the photorespiration pathway.
B)   raises the pH of the space until the processes stop.
C)   is small enough to diffuse back out through the lipid bilayer.
D)   converts NADP to NADPH and generates ATP in the process.
E)   moves from the thylakoid space to the stroma through the ATP synthase complex.F) A) and B)
G) A) and C)

Question 2

The red maple tree cannot photosynthesize because it is not green.

Accepted Answer

A) True 
 B)False

Question 3

What will cycle the energized electrons from the reaction center of PS I back to the reaction center in PS I?

Accepted Answer

A)   noncyclic electron pathway
B)   cyclic electron pathway
C)   CO2 fixation stage of Calvin cycle reactions
D)   citric acid cycle
E)   CO2 reduction phase of Calvin cycle reactionsF) A) and B)
G) A) and C)

Question 4

At the base of most food chains are autotrophs.

Accepted Answer

A) True 
 B)False

Question 5

Explain why chlorpohyll appears green to our eyes.

Accepted Answer

When the wavelengths of visible light en...

Question 6

CAM plants

Accepted Answer

A)   do not perform any part of photosynthesis during the day.
B)   fix CO2 in mesophyll cells during the day.
C)   include economically important food crops like corn and sugarcane.
D)   open their stomata at night to minimize water loss.
E)   typically grow very quickly because they are found in hot, moist environments.F) B) and E)
G) C) and D)

Question 7

The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the

Accepted Answer

A)   stroma.
B)   thylakoid membrane.
C)   thylakoid space.
D)   cytoplasm.
E)   matrix.F) B) and D)
G) A) and E)

Question 8

The reason that deciduous leaves turn bright colors of red and yellow in the fall is

Accepted Answer

A)   chlorophyll is converted into bright carotenoid pigments.
B)   when chlorophyll breaks down, the remaining pigments other than green will show through.
C)   it is a chemical reaction involving the formation of ice crystals.
D)   bright pigments are shifted from the roots and stem to the leaves while sugars and chlorophyll are pumped down to the roots.
E)   a shift in the reflectance values of light is caused by the sun being lower in the sky; all leaf pigments actually remain the same.F) C) and E)
G) A) and B)

Question 9

What pathway moves the electrons from water through PS II to PS I and then on to NADP+?

Accepted Answer

A)   noncyclic electron pathway
B)   cyclic electron pathway
C)   CO2 fixation stage of Calvin cycle reactions
D)   citric acid cycle
E)   CO2 reduction phase of Calvin cycle reactionsF) A) and C)
G) C) and E)

Question 10

Water is split and oxygen is released in

Accepted Answer

A)   the electron transport chain.
B)   the cyclic electron pathway.
C)   the Calvin cycle reactions.
D)   the noncyclic electron pathway.
E)   photosystem I.F) C) and E)
G) B) and E)

Question 11

What is the function of ribulose bisphosphate (RuBP) during photosynthesis?

Accepted Answer

A)   It produces the CO2 needed for photosynthesis.
B)   It combines with CO2 to produce a 6-carbon compound.
C)   It combines with ATP to form G3P.
D)   It splits water to release oxygen.
E)   It splits carbon dioxide to release oxygen.F) A) and C)
G) A) and E)

Question 12

What are the two sets of reactions for photosynthesis?

Accepted Answer

A)   light reactions, Calvin cycle reactions
B)   glycolysis, citric acid cycle
C)   light reactions, glycolysis
D)   Calvin cycle reactions, citric acid cycle
E)   electron transport chain, light reactionsF) B) and D)
G) None of the above

Question 13

The formation of carbohydrate occurs within the

Accepted Answer

A)   stroma.
B)   outer chloroplast membrane.
C)   inner chloroplast membrane.
D)   thylakoid membranes.
E)   thylakoid space.F) B) and D)
G) A) and C)

Question 14

The Calvin cycle reactions are dependent upon a supply of

Accepted Answer

A)   water and carbon dioxide.
B)   carbon dioxide and NADPH.
C)   carbon dioxide, NADPH, and ATP.
D)   oxygen and carbon dioxide.
E)   glucose and carbon dioxide.F) A) and E)
G) B) and E)

Question 15

Most major food plants such as wheat,oats,and rice are in the group of

Accepted Answer

A)   nonphotosynthetic plants.
B)   C3 plants.
C)   C4 plants.
D)   C5 plants.
E)   CAM plants.F) B) and E)
G) None of the above

Question 16

Visible light has more energy than radio waves.

Accepted Answer

A) True 
 B)False

Question 17

Explain why CAM plants are adapted to a desert type of environment.

Accepted Answer

CAM plants separate components of the ph...

Question 18

What is the value of photosynthesis to humans?

Accepted Answer

A)   It results in the production of fatty acids and oxygen.
B)   It results in the production of proteins and oxygen.
C)   It will convert carbohydrates into useable forms of energy for humans.
D)   It will reduce the amount of methane in the atmosphere.
E)   It will reduce the amount of carbon dioxide in the atmosphere.F) All of the above
G) A) and E)

Question 19

Which of the following is NOT a characteristic shared by cellular respiration and photosynthesis?

Accepted Answer

A)   Both photosynthesis and cellular respiration occur in plant cells.
B)   Both processes produce ATP by chemiosmosis.
C)   Both processes produce oxygen.
D)   Both processes use an electron transport chain located in membranes of organelles.
E)   One or more electron carriers are used in both processes.F) B) and C)
G) None of the above

Question 20

To what does the term grana refer?

Accepted Answer

A)   the cytochrome system in the membranes of the thylakoids
B)   a stack of thylakoid membrane structures
C)   the double membrane of the chloroplast
D)   a flattened disk or sac in the chloroplast
E)   the central fluid-filled space of the chloroplastF) A) and E)
G) A) and B)

Exam 8: Photosynthesis

Explain why chlorpohyll appears green to our eyes.

Correct AnswerverifiedWhen the wavelengths of visible light en...View AnswerShow Answer

Which of the following is NOT a characteristic shared by cellular respiration and photosynthesis?

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CAM plants

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What will cycle the energized electrons from the reaction center of PS I back to the reaction center in PS I?

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What is the function of ribulose bisphosphate (RuBP) during photosynthesis?

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Explain why CAM plants are adapted to a desert type of environment.

Correct AnswerverifiedCAM plants separate components of the ph...View AnswerShow Answer

What is the value of photosynthesis to humans?

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The Calvin cycle reactions are dependent upon a supply of

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What pathway moves the electrons from water through PS II to PS I and then on to NADP+?

Correct AnswerverifiedShow Answer

Most major food plants such as wheat,oats,and rice are in the group of

Correct AnswerverifiedShow Answer

To what does the term grana refer?

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The red maple tree cannot photosynthesize because it is not green.

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The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the

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Visible light has more energy than radio waves.

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The reason that deciduous leaves turn bright colors of red and yellow in the fall is

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At the base of most food chains are autotrophs.

Correct AnswerverifiedShow Answer

Water is split and oxygen is released in

Correct AnswerverifiedShow Answer

What are the two sets of reactions for photosynthesis?

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The H+ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Correct AnswerverifiedShow Answer

The formation of carbohydrate occurs within the

Correct AnswerverifiedShow Answer

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When the wavelengths of visible light en...
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CAM plants separate components of the ph...
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What pathway moves the electrons from water through PS II to PS I and then on to NADP⁺?

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The H⁺ (protons) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

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