Question 1

Which pathway is the foundation for the majority of ecosystems and food chains on Earth?

Accepted Answer

A)  photosynthesis
B)  anaerobic respiration
C)  aerobic respiration
D)  chemosynthesis
E)  decompositionF) All of the above
G) C) and E)

Question 2

Which of the following is a CAM plant?

Accepted Answer

A)  rice
B)  cactus
C)  corn
D)  wheat
E)  sugarcaneF) B) and D)
G) A) and B)

Question 3

Which statement about producers and/or consumers is true?

Accepted Answer

A)  Consumers not only feed themselves but also feed producers.
B)  All animals must be either producers or consumers.
C)  Producers produce more food than they use.
D)  Consumers are not dependent upon other organisms for food.
E)  Only one species of producer and consumer can exist in any single community.F) A) and B)
G) A) and C)

Question 4

The hydrocarbon skeleton used to form fatty acids,glycerol,and amino acids (when N is added) is derived from

Accepted Answer

A)  starch.
B)  sucrose.
C)  cellulose.
D)  G3P.
E)  glucose phosphate.F) A) and D)
G) B) and E)

Question 5

What does the term stroma refer to?

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) C) and D)
G) A) and B)

Question 6

Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis?

Accepted Answer

A)  carbon dioxide
B)  water
C)  cytochrome
D)  glucose
E)  G3PF) All of the above
G) A) and B)

Question 7

Photosynthesis shows higher activity for violet/blue and orange/red and a lower absorption for green/yellow.If we could create a different photosynthetic pigment that absorbed absolutely all visible wavelengths of light,the leaves would appear which color?

Accepted Answer

A)  white
B)  black
C)  red
D)  green
E)  orangeF) B) and E)
G) A) and B)

Question 8

The main function of stomata is to

Accepted Answer

A)  expose the chlorophyll to sunlight.
B)  transport water to the chlorophyll.
C)  allow passage of CO2 and O2 into the leaf.
D)  store glucose.
E)  store pyruvate and provide the site of the Calvin cycle.F) None of the above
G) A) and B)

Question 9

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 B)
G) C) and D)

Question 10

Photosynthesis and cellular respiration utilize the same chemical pathways but in reverse of each other.

Accepted Answer

A) True 
 B)False

Question 11

Some herbicides inhibit the electron transport chain in the thylakoid membrane.Without the movement of electrons,hydrogen ions would not be pumped from the stroma to the thylakoid space and the hydrogen ion gradient would not be established.How would this affect the Calvin cycle reactions?

Accepted Answer

A)  ATP would not be produced and,as a result,the Calvin cycle reactions would not occur.
B)  CO2 would not enter the cell as a result,and the Calvin cycle reactions would not occur.
C)  RuBP carboxylase would not function properly,so CO2 fixation would not occur.
D)  Sunlight could no longer be used by the chloroplast,but this would have no effect on the Calvin cycle reactions because they do not require light.
E)  Since the Calvin cycle reactions occur in a different part of the chloroplast,there would be no effect.F) A) and D)
G) C) and E)

Question 12

Which cofactor is involved in the Calvin cycle reactions?

Accepted Answer

A)  NAD+
B)  FAD
C)  NADP+
D)  both NAD+ and FAD
E)  both FAD and NADP+F) C) and E)
G) All of the above

Question 13

The "antenna" system of a plant that gathers the solar energy consists of

Accepted Answer

A)  the grana.
B)  the epidermal cells of the leaf.
C)  the pigment complex.
D)  the ATP synthase complex.
E)  the hydrogen ions (H+) F) B) and E)
G) A) and B)

Question 14

Which of the following is a substrate in the photosynthesis equation?

Accepted Answer

A)  CO2
B)  O2
C)  C6H12O6
D)  H2E) B) and C)
F) A) and D)

Question 15

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 E)
G) D) and E)

Question 16

Write the overall chemical equation for photosynthesis and cellular respiration.

Accepted Answer

Energy + 6...

Question 17

The flattened sacs within the stroma of a chloroplast,which are connected to form a single inner compartment,are called

Accepted Answer

A)  stomata.
B)  thylakoids.
C)  mesophyll.
D)  carotenoids.
E)  CAM units.F) B) and E)
G) A) and B)

Question 18

What are the products of photosynthesis?

Accepted Answer

A)  water and carbon dioxide
B)  water and oxygen
C)  carbohydrate and water
D)  oxygen and carbohydrate
E)  carbon dioxide and carbohydrateF) A) and E)
G) B) and D)

Question 19

Why are plant leaves green?

Accepted Answer

A)  They absorb only green wavelengths of light.
B)  They absorb only yellow and blue wavelengths of light.
C)  They reflect nearly all wavelengths of light.
D)  They reflect green wavelengths of light.
E)  They reflect yellow and blue wavelengths of light.F) A) and B)
G) D) and E)

Question 20

Heterotrophs

Accepted Answer

A)  have the ability to synthesize organic molecules from inorganic molecules.
B)  are ultimately dependent upon preformed organic molecules made by producers.
C)  are the origin of all food for the rest of the living world.
D)  are also called autotrophs.
E)  None of the answer choices is characteristic of heterotrophs.F) A) and B)
G) A) and E)

Exam 8: Photosynthesis

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

Correct AnswerverifiedShow Answer

Which cofactor is involved in the Calvin cycle reactions?

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Which of the following is a CAM plant?

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Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis?

Correct AnswerverifiedShow Answer

The main function of stomata is to

Correct AnswerverifiedShow Answer

Write the overall chemical equation for photosynthesis and cellular respiration.

Correct AnswerverifiedEnergy + 6...View AnswerShow Answer

Photosynthesis shows higher activity for violet/blue and orange/red and a lower absorption for green/yellow.If we could create a different photosynthetic pigment that absorbed absolutely all visible wavelengths of light,the leaves would appear which color?

Correct AnswerverifiedShow Answer

Which statement about producers and/or consumers is true?

Correct AnswerverifiedShow Answer

What are the products of photosynthesis?

Correct AnswerverifiedShow Answer

The flattened sacs within the stroma of a chloroplast,which are connected to form a single inner compartment,are called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Heterotrophs

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Which of the following is a substrate in the photosynthesis equation?

Correct AnswerverifiedShow Answer

What does the term stroma refer to?

Correct AnswerverifiedShow Answer

Some herbicides inhibit the electron transport chain in the thylakoid membrane.Without the movement of electrons,hydrogen ions would not be pumped from the stroma to the thylakoid space and the hydrogen ion gradient would not be established.How would this affect the Calvin cycle reactions?

Correct AnswerverifiedShow Answer

The "antenna" system of a plant that gathers the solar energy consists of

Correct AnswerverifiedShow Answer

Which pathway is the foundation for the majority of ecosystems and food chains on Earth?

Correct AnswerverifiedShow Answer

Photosynthesis and cellular respiration utilize the same chemical pathways but in reverse of each other.

Correct AnswerverifiedShow Answer

Why are plant leaves green?

Correct AnswerverifiedShow Answer

The hydrocarbon skeleton used to form fatty acids,glycerol,and amino acids (when N is added) is derived from

Correct AnswerverifiedShow Answer

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Energy + 6...
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