Question 1

Mutation of molecules in photosystem I but not photosystem II would lead a plant cell to

Accepted Answer

A)  produce O2,ATP,and NADP+.
B)  produce O2,ATP,and NADPH.
C)  produce ATP and NADP+.
D)  produce ATP and NADPH.
E)  produce CO2 and ATP.F) A) and B)
G) A) and D)

Question 2

The purpose of the light reaction is to produce

Accepted Answer

A)  O2,ATP,and NADP+
B)  O2,ATP,and NADPH
C)  ATP and NADPH
D)  ATP and NADP+
E)  CO2 and ATPF) C) and D)
G) A) and B)

Question 3

Plants require a lot of water for transpiration,metabolism,and photosynthesis.How is water used in photosynthesis?

Accepted Answer

A)  To combine with NADP+ to form NADPH
B)  As an electron donor
C)  To combine with ADP forming ATP
D)  As an electron acceptor
E)  As a substrate for ATP synthaseF) B) and E)
G) B) and D) B

Question 4

Both ATP and NADPH are required for

Accepted Answer

A)  electron transport through the thylakoid membrane.
B)  both the light reaction and Calvin cycle.
C)  the light reaction only.
D)  neither the light reaction nor the Calvin cycle.
E)  the Calvin cycle only.F) C) and D)
G) C) and E)

Question 5

In the reaction,6CO2 + 6H2O  →\rarr→ C6H12O6 + 6O2,carbon dioxide is being

Accepted Answer

A)  hydrolyzed
B)  reduced
C)  phosphorylated
D)  oxidized
E)  condensed F) C) and D)
G) A) and B) B

Question 6

Compared to red light,blue light has

Accepted Answer

A)  more energy and is reflected by a green leaf.
B)  less energy and is absorbed by a green leaf.
C)  less energy and is reflected by a green leaf.
D)  more energy and is absorbed by a green leaf.E) B) and C)
F) A) and B)

Question 7

What would happen to a plant that is treated with a chemical that prevents electrons from moving through the electron transport chain?

Accepted Answer

A)  It could no longer produce CO2.
B)  It could not generate an electrochemical H+ gradient across a membrane.
C)  Water would be broken down to form oxygen at a higher rate to compensate.
D)  It could not produce NADP+.
E)  More electrons would be available for the light harvesting array.F) A) and B)
G) A) and C)

Question 8

If you wanted to install lights to grow plants indoors,the type of light would you want to us is

Accepted Answer

A)  ultraviolet,because it has stronger wavelengths.
B)  gamma rays,because it has stronger wavelengths.
C)  infrared,because it has stronger wavelengths.
D)  visible light,because it has milder wavelengths.
E)  microwaves,because it has milder wavelengths.F) A) and C)
G) C) and D)

Question 9

A comparison of mitochondria and chloroplast shows that

Accepted Answer

A)  both use oxygen as a final electron acceptor.
B)  both use an increase in pH in their inner-membrane space to produce ATP.
C)  both generate ATP via a H+ electrochemical gradient.
D)  only mitochondria contain ATP synthase.
E)  they have very different electron transport protein complexes.F) B) and E)
G) B) and C)

Question 10

Energy is carried from the light reaction to the carbon reaction by

Accepted Answer

A)  water
B)  ATP
C)  NADPH
D)  oxygen
E)  NADP+F) A) and D)
G) None of the above

Question 11

The purpose of the light reaction is to produce

Accepted Answer

A)  NADPH and ATP
B)  carbon dioxide and ATP
C)  ATP and oxygen
D)  oxygen and glucose
E)  glucose and NADPHF) A) and B)
G) A) and E)

Question 12

The primary advantage C4 plants have over C3 plants is that

Accepted Answer

A)  C4 plants can produce sugars more efficiently than C3 plants under cool,wet conditions.
B)  C4 plants minimize photorespiration compared with C3 plants.
C)  C4 plants can produce CO2 needed for sugar production in the Calvin cycle more efficiently than C3 plants.
D)  relative to C3 plants,C4 plants can keep their stomata open more frequently to limit water evaporation.E) B) and C)
F) All of the above

Question 13

Which portion of the photosynthetic apparatus absorbs light?

Accepted Answer

A)  photosystem I
B)  both photosystem I and photosystem II
C)  NADP reductase
D)  photosystem II
E)  both photosystem I and NADP reductaseF) C) and E)
G) A) and E)

Question 14

Where does the Calvin cycle occur?

Accepted Answer

A)  chloroplast inner membrane
B)  chloroplast stroma
C)  thylakoid lumen
D)  chloroplast outer membrane
E)  thylakoid membraneF) A) and C)
G) B) and E)

Question 15

The Calvin cycle is only capable of fixing carbon dioxide in the dark.

Accepted Answer

A) True 
 B)False

Question 16

Photons from light can boost an electron to a higher energy state.

Accepted Answer

A) True 
 B)False

Question 17

The equation,6CO2 + 6H2O  →\rarr→ C6H12O6 + 6O2,describes which process?

Accepted Answer

A)  photosynthesis
B)  Calvin cycle
C)  aerobic respiration
D)  nitrogen fixation
E)  light reaction F) B) and D)
G) A) and B) A

Question 18

In the reaction,6CO2 + 6H2O  →\rarr→ C6H12O6 + 6O2,which side should energy be placed on?

Accepted Answer

A)  The right side,this is an exergonic reaction
B)  The left side,this is an exergonic reaction
C)  The right side,this is an endergonic reaction
D)  The left side,this is an endergonic reaction
E)  Neither side,the reaction is in equilibrium F) D) and E)
G) C) and E)

Question 19

How might a plant cope with the fact that the Calvin cycle uses more ATP than NADPH,yet produces roughly the same amount of both energy intermediates in photosystems I and II?

Accepted Answer

A)  Electron flow rate can be increased,increasing both ATP and NADPH production.
B)  Plants often increase the amount of NADP reductase,thereby increasing NADPH production to match ATP output.
C)  Photosynthesis can revert from a noncyclic to cyclic electron flow,producing more ATP than NADPH.
D)  Increase the electrochemical gradient for H+ across the thylakoid membrane,producing more ATP but not NADPH.
E)  More pigment can be rapidly created for greater photosynthetic capacity,producing equal amounts of ATP and NADPH.F) A) and E)
G) A) and D)

Question 20

The main structure for gas exchange in plants is called the

Accepted Answer

A)  stomatA.
B)  mesophyll.
C)  epidermis.
D)  root.
E)  chloroplast.F) B) and E)
G) A) and B)

Exam 7: Photosynthesis

Mutation of molecules in photosystem I but not photosystem II would lead a plant cell to

Correct AnswerverifiedShow Answer

The purpose of the light reaction is to produce

Correct AnswerverifiedShow Answer

Plants require a lot of water for transpiration,metabolism,and photosynthesis.How is water used in photosynthesis?

Correct AnswerverifiedB

Both ATP and NADPH are required for

Correct AnswerverifiedShow Answer

In the reaction,6CO2 + 6H2O →\rarr→ C6H12O6 + 6O2,carbon dioxide is being

Correct AnswerverifiedB

Compared to red light,blue light has

Correct AnswerverifiedShow Answer

What would happen to a plant that is treated with a chemical that prevents electrons from moving through the electron transport chain?

Correct AnswerverifiedShow Answer

If you wanted to install lights to grow plants indoors,the type of light would you want to us is

Correct AnswerverifiedShow Answer

A comparison of mitochondria and chloroplast shows that

Correct AnswerverifiedShow Answer

Energy is carried from the light reaction to the carbon reaction by

Correct AnswerverifiedShow Answer

The purpose of the light reaction is to produce

Correct AnswerverifiedShow Answer

The primary advantage C4 plants have over C3 plants is that

Correct AnswerverifiedShow Answer

Which portion of the photosynthetic apparatus absorbs light?

Correct AnswerverifiedShow Answer

Where does the Calvin cycle occur?

Correct AnswerverifiedShow Answer

The Calvin cycle is only capable of fixing carbon dioxide in the dark.

Correct AnswerverifiedShow Answer

Photons from light can boost an electron to a higher energy state.

Correct AnswerverifiedShow Answer

The equation,6CO2 + 6H2O →\rarr→ C6H12O6 + 6O2,describes which process?

Correct AnswerverifiedA

In the reaction,6CO2 + 6H2O →\rarr→ C6H12O6 + 6O2,which side should energy be placed on?

Correct AnswerverifiedShow Answer

How might a plant cope with the fact that the Calvin cycle uses more ATP than NADPH,yet produces roughly the same amount of both energy intermediates in photosystems I and II?

Correct AnswerverifiedShow Answer

The main structure for gas exchange in plants is called the

Correct AnswerverifiedShow Answer

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B

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In the reaction,6CO₂ + 6H₂O $\rarr$ C₆H₁₂O₆ + 6O₂,carbon dioxide is being

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B

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The equation,6CO₂ + 6H₂O $\rarr$ C₆H₁₂O₆ + 6O₂,describes which process?

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A

In the reaction,6CO₂ + 6H₂O $\rarr$ C₆H₁₂O₆ + 6O₂,which side should energy be placed on?

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