Question 1

Replacement electrons for the reaction center of photosystem II are derived from __________.

Accepted Answer

A)   H2O
B)   NADP+
C)   G3P
D)   NADPH
E)   CO2F) B) and D)
G) C) and D)

Question 2

In a high latitude rainforest, the dominant type of photosynthesis is most likely to be

Accepted Answer

A)   both C3 and CAM.
B)   C4.
C)   CAM.
D)   both C4 and CAM.
E)   C3.F) D) and E)
G) A) and E)

Question 3

Sucrose, cellulose, amino acids, and starch are all made from what starter molecule in plants?

Accepted Answer

A)   Glucose
B)   Fructose
C)   Glyceraldehyde-3-phosphate (G3P) 
D)   ATP
E)   RuBP carboxylaseF) D) and E)
G) C) and E)

Question 4

The reaction center of photosystem I consists of what type of molecule?

Accepted Answer

A)   chlorophyll a
B)   chlorophyll b
C)   carotenoids
D)   NADP+
E)   electron transport proteinsF) A) and D)
G) A) and B)

Question 5

Which compounds link the light reactions with the Calvin cycle reactions?

Accepted Answer

A)   ATP and NADPH
B)   H+ and ATP
C)   G3P and ATP
D)   H+ and G3P
E)   G3P and NADPHF) B) and D)
G) A) and B)

Question 6

The light-harvesting complexes of a chloroplast are located in the ______; the enzymes of the Calvin cycle reactions are located in the _________.

Accepted Answer

A)   thylakoid membrane; stroma
B)   stroma; thylakoid space
C)   thylakoid space; thylakoid membrane
D)   stroma; thylakoid membrane
E)   thylakoid space; stromaF) B) and E)
G) C) and D)

Question 7

What is the major disadvantage of CAM photosynthesis relative to C3 or C4 photosynthesis?

Accepted Answer

A)   lower G3P yield
B)   less water loss
C)   less CO2 availability
D)   fewer electrons available from chlorophyll
E)   fewer NADPH molecules from the light reactionsF) A) and E)
G) None of the above

Question 8

The localization of the electron transport chains to the thylakoid membrane ensures that

Accepted Answer

A)   the energy released can be used to establish an H+ ion gradient.
B)   the energy released is stored in the stroma.
C)   NADP+ does not enter the thylakoid space.
D)   CO2 remains in the stroma for the Calvin cycle reactions and does not enter the thylakoid space.
E)   glyceraldehyde-3-phosphate (G3P)  is produced in the thylakoid space.F) All of the above
G) None of the above

Question 9

Which of the following events does NOT take place in the light reactions?

Accepted Answer

A)   transfer of electrons to the reaction center of photosystem I
B)   generation of ATP from ADP + Pi
C)   splitting of water, releasing an electron
D)   generation of NADPH from NADP+
E)   conversion of 3PG to G3PF) A) and B)
G) All of the above

Question 10

Grana are

Accepted Answer

A)   Interconnecting stomata.
B)   Flattened sacs of thylakoid membrane.
C)   Pores that open to allow gas exchange.
D)   The sites of the Calvin cycle and production of sugars.
E)   Enzymes that bind CO2.F) A) and E)
G) A) and D)

Question 11

How many times must the Calvin cycle turn to yield a single molecule of glyceraldehydes-3-phosphate (G3P) .

Accepted Answer

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

Question 12

The Calvin cycle reactions only occur in bundle sheath cells in a C4 plant

Accepted Answer

A)   to shield the Calvin cycle reactions from O2 in the leaf spaces.
B)   to allow O2 to enter bundle sheath cells.
C)   because rubisco is only found in mesophyll cells.
D)   so that they are adjacent to stomata.
E)   so that H2O is not available to mesophyll cells.F) C) and D)
G) A) and B)

Question 13

In which of the labeled cells of a C4 leaf are the Calvin cycle reactions performed?

Accepted Answer

A)   A and B
B)   B and C
C)   A and D
D)   B only
E)   C onlyF) A) and B)
G) B) and E)

Question 14

Which of the following is not derived from G3P?

Accepted Answer

A)   starch
B)   cellulose
C)   glucose phosphate
D)   NADP+
E)   sucroseF) A) and E)
G) None of the above

Question 15

The enzyme-rich solution found within the chloroplast is called the ________.

Accepted Answer

A)   granum
B)   chlorophyll
C)   cytoplasm
D)   stromaE) A) and C)
F) A) and B)

Question 16

Why do plants contain other pigments besides chlorophyll?

Accepted Answer

A)   The additional pigments are able to absorb other light wavelengths that chlorophyll cannot.
B)   The additional pigments can only absorb violet or ultraviolet light.
C)   Chlorophyll is unable to absorb visible light.
D)   When chlorophyll breaks down, the additional pigments can absorb the same wavelengths of light.
E)   When the additional pigments break down, the chlorophyll can absorb other wavelengths of light.F) B) and D)
G) B) and E)

Question 17

RuBP carboxylase (rubisco)  is able to bind with both

Accepted Answer

A)   Carbon dioxide and water.
B)   Carbon dioxide and oxygen.
C)   Carbon dioxide and NADPH.
D)   Oxygen and water.
E)   NADPH and ATP.F) All of the above
G) A) and C)

Question 18

Which complex or enzyme of photosynthesis consumes H2O?

Accepted Answer

A)   Photosystem I
B)   Photosystem II
C)   rubisco
D)   electron transport chain
E)   ATP synthaseF) B) and C)
G) A) and E)

Question 19

Which stages of the Calvin cycle reactions require the use of energy from ATP?

Accepted Answer

A)   CO2 fixation and CO2 reduction
B)   RuBP regeneration and CO2 reduction
C)   CO2 reduction and RuBP regeneration
D)   CO2 fixation and RuBP regeneration
E)   CO2 fixation, CO2 reduction, and RuBP regenerationF) None of the above
G) D) and E)

Question 20

Which of the following organisms can perform photosynthesis?

Accepted Answer

A)   algae
B)   fungi
C)   animals
D)   invertebrates
E)   vertebratesF) A) and D)
G) A) and C)

Exam 6: Energy for Life

How many times must the Calvin cycle turn to yield a single molecule of glyceraldehydes-3-phosphate (G3P) .

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Grana are

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Which stages of the Calvin cycle reactions require the use of energy from ATP?

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Sucrose, cellulose, amino acids, and starch are all made from what starter molecule in plants?

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Which compounds link the light reactions with the Calvin cycle reactions?

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The enzyme-rich solution found within the chloroplast is called the ________.

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In which of the labeled cells of a C4 leaf are the Calvin cycle reactions performed?

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Which of the following events does NOT take place in the light reactions?

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The reaction center of photosystem I consists of what type of molecule?

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Which complex or enzyme of photosynthesis consumes H2O?

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The localization of the electron transport chains to the thylakoid membrane ensures that

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In a high latitude rainforest, the dominant type of photosynthesis is most likely to be

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Which of the following is not derived from G3P?

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Which of the following organisms can perform photosynthesis?

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The Calvin cycle reactions only occur in bundle sheath cells in a C4 plant

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Why do plants contain other pigments besides chlorophyll?

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What is the major disadvantage of CAM photosynthesis relative to C3 or C4 photosynthesis?

Correct AnswerverifiedShow Answer

The light-harvesting complexes of a chloroplast are located in the ______; the enzymes of the Calvin cycle reactions are located in the _________.

Correct AnswerverifiedShow Answer

RuBP carboxylase (rubisco) is able to bind with both

Correct AnswerverifiedShow Answer

Replacement electrons for the reaction center of photosystem II are derived from __________.

Correct AnswerverifiedShow Answer

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Which complex or enzyme of photosynthesis consumes H₂O?

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The Calvin cycle reactions only occur in bundle sheath cells in a C₄ plant

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The light-harvesting complexes of a chloroplast are located in the ; the enzymes of the Calvin cycle reactions are located in the ___.

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