Question 1

Chlorophyll b absorbs in 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) All of the above
F) A) and B)

Question 2

Molecules that absorb light are called

Accepted Answer

A)  enzymes.
B)  electron carriers.
C)  pigments.
D)  photosynthesizers.
E)  absorbers.F) C) and D)
G) A) and B)

Question 3

Flattened sacs of internal membranes associated with photosynthesis are called

Accepted Answer

A)  chloroplasts.
B)  photosystems.
C)  the stroma.
D)  thylakoids.
E)  cristaE.F) A) and C)
G) All of the above

Question 4

If chlorophyll a is blocked from absorbing,what will happen to chlorophyll b since it is an accessory pigment?

Accepted Answer

A)  Chlorophyll b will become denatured and will not function as a light-absorbing pigment.
B)  Chlorophyll b will still absorb near the green wavelengths of light,but photosynthesis will be greatly reduced.
C)  Chlorophyll b will become saturated with light and will continue photosynthesis even in the absence of chlorophyll a.
D)  Chlorophyll b will also be blocked and thus photosynthesis will be stoppeD.E) B) and C)
F) A) and D)

Question 5

How many revolutions of the Calvin cycle are required to produce the sugar glucose?

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6F) A) and B)
G) A) and C)

Question 6

One of the disadvantages of the C4 pathway is that it requires

Accepted Answer

A)  more O2.
B)  more NADPH.
C)  more light.
D)  more ATP.
E)  a much higher temperaturE.F) A) and B)
G) C) and E)

Question 7

In the dark reactions of photosynthesis,CO2 is added to a five-carbon sugar-phosphate known as

Accepted Answer

A)  cyclic AMP.
B)  NADH.
C)  NAD+.
D)  RuBP.
E)  CAM.F) A) and B)
G) A) and C)

Question 8

Which of the following experimental modifications would help to determine the sequence of reactions and the reaction intermediates in the Calvin cycle?

Accepted Answer

A)  exposing the cells to 14CO2 for various time intervals
B)  exposing the cells to alternating periods of light and darkness
C)  exposing the cells to radiolabeled O2 instead of 14CO2
D)  varying other rate limiting steps of photosynthesis such as water and lightE) A) and B)
F) A) and C)

Question 9

The Calvin cycle is driven by ATP and _____ produced in the light reactions.

Accepted Answer

A)  NAD+
B)  NADH
C)  NADP+
D)  NADPHE) A) and B)
F) A) and D)

Question 10

Photosystem II absorbs protons that are slightly more energetic than photosystem I,but similarly pass this energy to a pigment called

Accepted Answer

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

Question 11

In dark reactions,when CO2 is added to a molecule of RUBP the product is

Accepted Answer

A)  citric acid.
B)  glucose.
C)  glyceraldehyde-3-phosphate.
D)  phosphoglycerate.
E)  pyruvatE.F) D) and E)
G) B) and E)

Question 12

Visible light with longest wavelength and lowest-energy photons;one of the regions where chlorophylls absorb.

Accepted Answer

A)  green
B)  violet-blue
C)  red
D)  ultraviolet
E)  yellow-orangeF) A) and C)
G) All of the above

Question 13

Which of the following is not part of the light-dependent reactions?

Accepted Answer

A)  primary photoevent
B)  charge separation
C)  Calvin cycle
D)  electron transport
E)  chemiosmosisF) A) and E)
G) B) and E)

Question 14

Which of the following statements best describes the relative concentrations of G3P and RuBP in a chloroplast as a result of a transition from daytime (light) to nighttime (dark) ?

Accepted Answer

A)  The concentrations of G3P and RuBP would remain the same.
B)  The concentrations of G3P and RuBP would both decrease.
C)  G3P would increase and RuBP would decrease.
D)  G3P would decrease and RuBP would increase.E) All of the above
F) B) and D)

Question 15

Clusters of chlorophyll and accessory pigments are called _________.

Accepted Answer

A)  the Golgi apparatus
B)  chloroplasts
C)  photosystems
D)  photosynthetic membranesE) A) and C)
F) A) and B)

Question 16

The wavelengths absorbed by a particular pigment depend on the available ______ levels to which the light-excited electrons can be absorbed.

Accepted Answer

A)  radiation
B)  electron
C)  energy
D)  photosyntheticE) A) and D)
F) All of the above

Question 17

High energy component of the electromagnetic spectrum;associated with sunburn.

Accepted Answer

A)  green
B)  violet-blue
C)  red
D)  ultraviolet
E)  yellow-orangeF) A) and B)
G) D) and E)

Question 18

Which of the following would not be considered to be a function of the antennae complex in photosynthesis?

Accepted Answer

A)  enables a wide use of the visible light spectrum
B)  enables an efficient light reaction
C)  provides adaptability to varying light conditions
D)  acts as reaction centerE) A) and D)
F) C) and D)

Question 19

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

Accepted Answer

A)  matrix
B)  stroma
C)  envelope
D)  outer membrane
E)  internal thylakoid spaceF) B) and C)
G) A) and E)

Question 20

Your class project involves a presentation of the photoelectric effect.Which of the following materials would be the most helpful for a clear demonstration?

Accepted Answer

A)  glow in the dark stickers and a UV light
B)  glow in the dark stickers and an infrared light
C)  a prism and a visible light source
D)  a prism and a UV light sourceE) A) and B)
F) A) and C)

Exam 8: Photosynthesis

Which of the following would not be considered to be a function of the antennae complex in photosynthesis?

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Which of the following experimental modifications would help to determine the sequence of reactions and the reaction intermediates in the Calvin cycle?

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Flattened sacs of internal membranes associated with photosynthesis are called

Correct AnswerverifiedShow Answer

Which of the following is not part of the light-dependent reactions?

Correct AnswerverifiedShow Answer

Visible light with longest wavelength and lowest-energy photons;one of the regions where chlorophylls absorb.

Correct AnswerverifiedShow Answer

How many revolutions of the Calvin cycle are required to produce the sugar glucose?

Correct AnswerverifiedShow Answer

High energy component of the electromagnetic spectrum;associated with sunburn.

Correct AnswerverifiedShow Answer

The Calvin cycle is driven by ATP and _____ produced in the light reactions.

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

Correct AnswerverifiedShow Answer

The wavelengths absorbed by a particular pigment depend on the available ______ levels to which the light-excited electrons can be absorbed.

Correct AnswerverifiedShow Answer

Photosystem II absorbs protons that are slightly more energetic than photosystem I,but similarly pass this energy to a pigment called

Correct AnswerverifiedShow Answer

In the dark reactions of photosynthesis,CO2 is added to a five-carbon sugar-phosphate known as

Correct AnswerverifiedShow Answer

Which of the following statements best describes the relative concentrations of G3P and RuBP in a chloroplast as a result of a transition from daytime (light) to nighttime (dark) ?

Correct AnswerverifiedShow Answer

Molecules that absorb light are called

Correct AnswerverifiedShow Answer

Your class project involves a presentation of the photoelectric effect.Which of the following materials would be the most helpful for a clear demonstration?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If chlorophyll a is blocked from absorbing,what will happen to chlorophyll b since it is an accessory pigment?

Correct AnswerverifiedShow Answer

One of the disadvantages of the C4 pathway is that it requires

Correct AnswerverifiedShow Answer

In dark reactions,when CO2 is added to a molecule of RUBP the product is

Correct AnswerverifiedShow Answer

Clusters of chlorophyll and accessory pigments are called _________.

Correct AnswerverifiedShow Answer

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In the dark reactions of photosynthesis,CO₂ is added to a five-carbon sugar-phosphate known as

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One of the disadvantages of the C₄ pathway is that it requires

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In dark reactions,when CO₂ is added to a molecule of RUBP the product is

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