Question 1

In the Calvin cycle,the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is

Accepted Answer

A)  phosphoglycerokinase.
B)  ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) .
C)  triose phosphate isomerase.
D)  ferredoxin-NADP+ reductase.
E)  glyceraldehyde-3-phosphate dehydrogenase.F) A) and D)
G) C) and D)

Question 2

Each of the following compounds is a source of electrons for anoxygenic photosynthesis except

Accepted Answer

A)  S2- (sulfide) .
B)  S2O32- (thiosulfate) .
C)  H2O (water) .
D)  succinate.
E)  All of the above are sources of electrons for anoxygenic photosynthesis.F) A) and D)
G) A) and C)

Question 3

The Calvin cycle in C3 plants occurs in ________ cells,whereas the Calvin cycle in C4 plants occurs in the ________.

Accepted Answer

mesophyll;...

Question 4

Each of the following is part of the energy transduction from solar energy to chemical energy except

Accepted Answer

A)  light absorption by chlorophyll.
B)  electron flow through an electron transport system.
C)  unidirectional proton pumping across a membrane.
D)  an electrochemical proton gradient.
E)  All are involved in the energy transduction.F) C) and E)
G) C) and D)

Question 5

Which of the following statements correctly describes cyclic electron flow pathways?

Accepted Answer

A)  Water molecules are split.
B)  Both PSI and PSII are required.
C)  Proton gradients are never formed.
D)  No exogenous electron source is required.
E)  O2 is released.F) All of the above
G) A) and B)

Question 6

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ________,making it a better electron ________.

Accepted Answer

A)  −0.80 V; donor
B)  −0.80 V; acceptor
C)  +0.80 V; donor
D)  +0.80 V; acceptor
E)  None of the above are correct.F) None of the above
G) A) and C)

Question 7

C3 and C4 plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C3 product is ________,whereas the C4 product is ________.

Accepted Answer

A)  glycerol; malate
B)  triose phosphate; oxaloacetate
C)  3-phosphoglycerate; malate
D)  ribose; phosphoenolpyruvate
E)  3-phosphoglycerate; oxaloacetateF) A) and C)
G) A) and E)

Question 8

Which of the following is the site of photosynthesis in cyanobacteria?

Accepted Answer

A)  peroxisomes
B)  mitochondria
C)  photosynthetic membranes
D)  outer walls
E)  thylakoid lumensF) C) and E)
G) B) and C)

Question 9

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

Accepted Answer

A)  Bacteriochlorophyll has a heme ring,but chlorophyll a and b each have a porphyrin ring.
B)  Chlorophyll a and b each have a phytol side chain,which is missing from bacteriochlorophyll.
C)  Chlorophyll a has a methyl group attached to the porphyrin ring,but bacteriochlorophyll has a formyl group.
D)  Bacteriochlorophyll has a saturated carbon-carbon bond at one location in the porphyrin ring that is not saturated in chlorophyll a and b.
E)  Chlorophyll a and b porphyrin rings bind Mg2+,but the bacteriochlorophyll ring binds Fe3+.F) A) and E)
G) B) and D)

Question 10

Each of the following is an essential feature of electron transfer from water to NADP+ except

Accepted Answer

A)  PSII.
B)  PSI.
C)  coenzyme Q.
D)  plastocyanin (P
C)  .
E)  cytochrome b6/f complex.F) None of the above
G) C) and D)

Question 11

Each of the following directly regulates the Calvin cycle activity to ensure maximum efficiency except

Accepted Answer

A)  stromal pH.
B)  Mg2+ concentration.
C)  chlorophyll photon absorption.
D)  NADPH concentration.
E)  ATP concentration.F) A) and B)
G) A) and C)

Question 12

The plastids that give flowers and fruits their distinctive colors are

Accepted Answer

A)  chloroplasts.
B)  elaioplasts.
C)  amyloplasts.
D)  chromoplasts.
E)  proteinoplasts.F) None of the above
G) C) and D)

Question 13

The Calvin cycle occurs in the chloroplast

Accepted Answer

A)  stroma.
B)  grana.
C)  thylakoid lumen.
D)  thylakoid membrane.
E)  outer membrane.F) B) and E)
G) B) and D)

Question 14

Carbon dioxide generally enters a plant through pores called

Accepted Answer

A)  mesophylls.
B)  stomata.
C)  cuticles.
D)  connexons.
E)  bacteriochlorophylls.F) A) and D)
G) C) and E)

Question 15

Most reactions involving NADP+ are ________ reactions,whereas most reactions involving NAD+ are ________ reactions.

Accepted Answer

A)  anabolic; catabolic
B)  catabolic; anabolic
C)  metabolic; anabolic
D)  anabolic; both catabolic and anabolic
E)  both catabolic and anabolic; catabolicF) B) and D)
G) C) and D)

Question 16

Biosynthesis of sucrose occurs in the

Accepted Answer

A)  cytosol.
B)  stroma.
C)  thylakoid lumen.
D)  chloroplast intermembrane space.
E)  vacuole.F) A) and C)
G) B) and C)

Question 17

3-phosphoglycerate is to C3 plants as ________ is to C4 plants.

Accepted Answer

Question 18

Plastocyanin (PC)

Accepted Answer

A)  is a mobile electron carrier.
B)  is functionally similar to plastoquinol.
C)  carries only one electron at a time.
D)  carries electrons to PSI.
E)  All of the above are true of PC.F) A) and E)
G) B) and D)

Exam 11: Phototrophic Energy Metabolism: Photosynthesis

In the Calvin cycle,the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is

Correct Answer
verified

Each of the following is part of the energy transduction from solar energy to chemical energy except

Correct Answer
verified

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ,making it a better electron .

Correct Answer
verified

Carbon dioxide generally enters a plant through pores called

Correct Answer
verified

Plastocyanin (PC)

Correct Answer
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Most reactions involving NADP⁺ are reactions,whereas most reactions involving NAD⁺ are reactions.

Correct Answer
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C₃ and C₄plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C₃product is ,whereas the C₄ product is .

Correct Answer
verified

Each of the following compounds is a source of electrons for anoxygenic photosynthesis except

Correct Answer
verified

The Calvin cycle occurs in the chloroplast

Correct Answer
verified

Each of the following is an essential feature of electron transfer from water to NADP⁺ except

Correct Answer
verified

The plastids that give flowers and fruits their distinctive colors are

Correct Answer
verified

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

Correct Answer
verified

3-phosphoglycerate is to C₃ plants as ________ is to C₄ plants.

Correct Answer
verified

The Calvin cycle in C₃ plants occurs in cells,whereas the Calvin cycle in C₄ plants occurs in the .

Correct Answer
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mesophyll;...
View Answer

Which of the following statements correctly describes cyclic electron flow pathways?

Correct Answer
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Biosynthesis of sucrose occurs in the

Correct Answer
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Which of the following is the site of photosynthesis in cyanobacteria?

Correct Answer
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Each of the following directly regulates the Calvin cycle activity to ensure maximum efficiency except

Correct Answer
verified

Exam 11: Phototrophic Energy Metabolism: Photosynthesis

In the Calvin cycle,the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is

Correct AnswerverifiedShow Answer

Each of the following is part of the energy transduction from solar energy to chemical energy except

Correct AnswerverifiedShow Answer

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ________,making it a better electron ________.

Correct AnswerverifiedShow Answer

Carbon dioxide generally enters a plant through pores called

Correct AnswerverifiedShow Answer

Plastocyanin (PC)

Correct AnswerverifiedShow Answer

Most reactions involving NADP+ are ________ reactions,whereas most reactions involving NAD+ are ________ reactions.

Correct AnswerverifiedShow Answer

C3 and C4 plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C3 product is ________,whereas the C4 product is ________.

Correct AnswerverifiedShow Answer

Each of the following compounds is a source of electrons for anoxygenic photosynthesis except

Correct AnswerverifiedShow Answer

The Calvin cycle occurs in the chloroplast

Correct AnswerverifiedShow Answer

Each of the following is an essential feature of electron transfer from water to NADP+ except

Correct AnswerverifiedShow Answer

The plastids that give flowers and fruits their distinctive colors are

Correct AnswerverifiedShow Answer

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

Correct AnswerverifiedShow Answer

3-phosphoglycerate is to C3 plants as ________ is to C4 plants.

Correct AnswerverifiedShow Answer

The Calvin cycle in C3 plants occurs in ________ cells,whereas the Calvin cycle in C4 plants occurs in the ________.

Correct Answerverifiedmesophyll;...View AnswerShow Answer

Which of the following statements correctly describes cyclic electron flow pathways?

Correct AnswerverifiedShow Answer

Biosynthesis of sucrose occurs in the

Correct AnswerverifiedShow Answer

Which of the following is the site of photosynthesis in cyanobacteria?

Correct AnswerverifiedShow Answer

Each of the following directly regulates the Calvin cycle activity to ensure maximum efficiency except

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
verified

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ,making it a better electron .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Most reactions involving NADP⁺ are reactions,whereas most reactions involving NAD⁺ are reactions.

Correct Answer
verified

C₃ and C₄plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C₃product is ,whereas the C₄ product is .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Each of the following is an essential feature of electron transfer from water to NADP⁺ except

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

3-phosphoglycerate is to C₃ plants as ________ is to C₄ plants.

Correct Answer
verified

The Calvin cycle in C₃ plants occurs in cells,whereas the Calvin cycle in C₄ plants occurs in the .

Correct Answer
verified
mesophyll;...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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