Question 1

The number of glyceraldehyde-3-phosphate molecules that would be produced from 24 turns of the Calvin cycle would be

Accepted Answer

A)  6
B)  8
C)  4
D)  12
E)  48F) None of the above
G) A) and B)

Question 2

A plant is treated with a chemical that blocks the flow of electrons between photosystem II and photosystem I,such that protons are not transported from the stroma into the thylakoid compartment.What is the effect of this chemical on photosynthesis?

Accepted Answer

A)  the increased number of protons will be directly used in the thylakoid to produce glucose
B)  an increased proton gradient will provide the energy needed to produce ATP from the light reactions
C)  a decreased proton gradient will cause less ATP to be produced from the light reactions
D)  the increased proton gradient will be used to make NADPH for the Calvin cycleE) A) and B)
F) C) and D)

Question 3

If you tagged organic carbon inside a chloroplast with a fluorescent label,the location most likely to have a high concentration of labeled carbon would be in the

Accepted Answer

A)  Stroma
B)  Thylakoid membrane
C)  Between the outer and inner membranes
D)  Inside the thylakoidE) A) and D)
F) A) and B)

Question 4

In photosynthesis,ATP is made by

Accepted Answer

A)  chemiosmosis.
B)  glycolysis.
C)  the Krebs cycle.
D)  the Calvin cycle.
E)  the passing of electrons from photosystem I to an electron transport chain.F) C) and D)
G) C) and E)

Question 5

Carotenoids are important to many plants because these pigments are able to

Accepted Answer

A)  remove carbon dioxide from the air.
B)  absorb wavelengths of light that neither chlorophyll a nor b can absorb.
C)  absorb water so that hydrolysis can be carried out in the chloroplasts.
D)  capture UV radiation that is harmful to the DNA in the nucleus of plant cells.
E)  store electrons for use during the "dark" reaction of photosynthesis.F) B) and D)
G) None of the above

Question 6

In the photosystem I reaction center,light energy captured by pigment molecules is passed to a special reaction center chlorophyll a called

Accepted Answer

A)  P680.
B)  P700.
C)  chlorophyll I.
D)  chlorophyll II.
E)  retinal.F) B) and E)
G) All of the above

Question 7

In plants,the light-dependent reactions require

Accepted Answer

A)  ATP.
B)  O2.
C)  NADP+.
D)  glucose.
E)  Calvin cycle enzymes.F) All of the above
G) C) and D)

Question 8

Light consists of units of energy called

Accepted Answer

A)  electrons.
B)  photons.
C)  calories.
D)  neutrons.
E)  pigments.F) A) and E)
G) A) and D)

Question 9

The cyclic carbon fixation reactions are also known as the

Accepted Answer

A)  Krebs cycle.
B)  Calvin cycle.
C)  citric acid cycle.
D)  tri carboxylic acid cycle.E) A) and B)
F) A) and C)

Question 10

Plants that show a pattern of stomatal opening and closing that is the reverse of C3 plants are called

Accepted Answer

A)  C4.
B)  Temperate.
C)  CAM.
D)  Calvin cycle.E) A) and D)
F) C) and D)

Question 11

Where do the carbon atoms in glucose come from?

Accepted Answer

A)  Sunlight
B)  Carbon dioxide
C)  Water
D)  NADPHE) A) and B)
F) All of the above

Question 12

If the gene encoding the enzyme rubisco is mutated such that it is non-functional,the process that would be affected is the ability to

Accepted Answer

A)  make ATP.
B)  harvest photons.
C)  fix carbon.
D)  make O2.
E)  make NADPH.F) A) and B)
G) A) and C)

Question 13

Which plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration?

Accepted Answer

A)  C3
B)  C4
C)  Desert
D)  ArcticE) None of the above
F) B) and C)

Question 14

The photosynthetic electron transport causes the accumulation of protons in which part of the chloroplast?

Accepted Answer

A)  matrix
B)  stroma
C)  outer membrane
D)  internal thylakoid spaceE) B) and C)
F) All of the above

Question 15

The plant hormone abscisic acid (ABA) is involved in the regulation of photorespiration.Based on this information,ABA likely plays a role in

Accepted Answer

A)  the opening and closing of stomata.
B)  the photoelectric effect.
C)  cyclic photophosphorylation.
D)  noncyclic photophosphorylation.E) None of the above
F) C) and D)

Question 16

Which type of plant can utilize the Calvin cycle?

Accepted Answer

A)  C3 plants
B)  CAM plants
C)  C4 plants
D)  C3,C4,and CAM plantsE) B) and D)
F) A) and B)

Question 17

For photosynthesis in green plants,the electron donor for the light-dependent reaction is

Accepted Answer

A)  carbon dioxide.
B)  oxygen.
C)  RuBP.
D)  chlorophyll II.
E)  water.F) D) and E)
G) B) and D)

Question 18

Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb.In this respect,chlorophyll b acts as

Accepted Answer

A)  an accessory pigment.
B)  an energizer for photosynthetic bacteria.
C)  a light absorber in the green light.
D)  a more efficient pigment.E) A) and B)
F) A) and C)

Question 19

CAM and C4 plants likely grow in what type of environment?

Accepted Answer

A)  Cool
B)  Hot and arid
C)  High altitude
D)  In waterE) B) and D)
F) None of the above

Question 20

Flattened sacs of internal membranes associated with photosynthesis are called

Accepted Answer

A)  chloroplasts.
B)  photosystems.
C)  the stroma.
D)  thylakoids.
E)  cristae.F) B) and E)
G) None of the above

Exam 8: Photosynthesis

If you tagged organic carbon inside a chloroplast with a fluorescent label,the location most likely to have a high concentration of labeled carbon would be in the

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Carotenoids are important to many plants because these pigments are able to

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Flattened sacs of internal membranes associated with photosynthesis are called

Correct AnswerverifiedShow Answer

Light consists of units of energy called

Correct AnswerverifiedShow Answer

Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb.In this respect,chlorophyll b acts as

Correct AnswerverifiedShow Answer

Where do the carbon atoms in glucose come from?

Correct AnswerverifiedShow Answer

Which plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration?

Correct AnswerverifiedShow Answer

If the gene encoding the enzyme rubisco is mutated such that it is non-functional,the process that would be affected is the ability to

Correct AnswerverifiedShow Answer

CAM and C4 plants likely grow in what type of environment?

Correct AnswerverifiedShow Answer

In the photosystem I reaction center,light energy captured by pigment molecules is passed to a special reaction center chlorophyll a called

Correct AnswerverifiedShow Answer

The cyclic carbon fixation reactions are also known as the

Correct AnswerverifiedShow Answer

The plant hormone abscisic acid (ABA) is involved in the regulation of photorespiration.Based on this information,ABA likely plays a role in

Correct AnswerverifiedShow Answer

The photosynthetic electron transport causes the accumulation of protons in which part of the chloroplast?

Correct AnswerverifiedShow Answer

The number of glyceraldehyde-3-phosphate molecules that would be produced from 24 turns of the Calvin cycle would be

Correct AnswerverifiedShow Answer

A plant is treated with a chemical that blocks the flow of electrons between photosystem II and photosystem I,such that protons are not transported from the stroma into the thylakoid compartment.What is the effect of this chemical on photosynthesis?

Correct AnswerverifiedShow Answer

In plants,the light-dependent reactions require

Correct AnswerverifiedShow Answer

Plants that show a pattern of stomatal opening and closing that is the reverse of C3 plants are called

Correct AnswerverifiedShow Answer

In photosynthesis,ATP is made by

Correct AnswerverifiedShow Answer

For photosynthesis in green plants,the electron donor for the light-dependent reaction is

Correct AnswerverifiedShow Answer

Which type of plant can utilize the Calvin cycle?

Correct AnswerverifiedShow Answer

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CAM and C₄ plants likely grow in what type of environment?

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Plants that show a pattern of stomatal opening and closing that is the reverse of C₃ plants are called

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