Question 1

While C-4 plants have carbon dioxide fixation and carbon dioxide uptake separated by location within the plant, CAM plants

Accepted Answer

A)   have these processes separated by time.
B)   fix much greater amounts of carbon dioxide than C-4 plants.
C)   are found in tropical regions where nutrients are abundant.
D)   All of the choices are correct.E) B) and D)
F) B) and C)

Question 2

When an electron has been excited to a higher energy state, it can then drop back to the original level, re-emitting the light as fluorescence. When chlorophyll is extracted in solution, and a bright red or blue light is shown on it, the chlorophyll fluoresces brightly. However, when the chlorophyll is packaged inside chloroplasts and the red or blue light is turned on, there is no fluorescence. This most likely indicates that

Accepted Answer

A)   the red and blue light waves are reflected by the chlorophyll membrane.
B)   chlorophyll in solution is a different molecule than chlorophyll in a chloroplast.
C)   excited electrons are transferred to electron acceptors in the chloroplast.
D)   fluorescence does not work in living cells.
E)   green light must be used to make living cells fluoresce.F) B) and E)
G) A) and B)

Question 3

is a reaction assisted by large quantities of RuBP carboxylase enzyme.

Accepted Answer

A) True 
 B)False

Question 4

To what does the term stroma refer?

Accepted Answer

A)   the double membrane of the chloroplast
B)   a flattened disk or sac in the chloroplast
C)   a stack of thylakoid membrane structures
D)   the central fluid-filled space of the chloroplast
E)   the cytochrome system in the membranes of the thylakoidsF) A) and E)
G) C) and D)

Question 5

Photo respiration occurs mainly in

Accepted Answer

A)   C3 plants.
B)   C4 plants.
C)   CAM plants.
D)   all of the answer choices.E) A) and D)
F) None of the above

Question 6

When the stomata in a leaf close during the day, then

Accepted Answer

A)   carbon dioxide in the air spaces in the leaf decreases.
B)   oxygen in the air spaces in the leaf increases.
C)   C3 plants carry on photorespiration, using O2 and producing PGA and CO2.
D)   all photosystems as well as photorespiration come to a halt.
E)   All choices but the halting of photosystems are correct.F) C) and D)
G) B) and E)

Question 7

Fossil fuels are full of energy stored from photosynthesis millions of years ago.

Accepted Answer

A) True 
 B)False

Question 8

A product of photosynthesis, __________, is the chief source of energy for most organisms.

Accepted Answer

A)   oxygen
B)   sucrose
C)   glucose
D)   All of the answer choicesE) B) and C)
F) All of the above

Question 9

Plants that conduct C-4 metabolism are desert plants.

Accepted Answer

A) True 
 B)False  True

Question 10

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Accepted Answer

A)   they are taken up by NADP+ to produce NADPH
B)   they are taken up by NADPH to produce NADP+
C)   they are taken up by NADH to produce NAD+
D)   they are taken up by NAD+ to produce NADHE) A) and C)
F) A) and D)

Question 11

The function of sunlight in photosynthesis is to

Accepted Answer

A)   reduce NADPH to NADP.
B)   fix O2 in the Calvin cycle.
C)   excite electrons in chlorophyll.
D)   combine carbon dioxide and water to form ATP and NADPH.E) B) and C)
F) A) and D)

Question 12

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Accepted Answer

A) True 
 B)False

Question 13

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Accepted Answer

A) True 
 B)False  False

Question 14

Create an experiment that tests this null hypothesis: The rate of photosynthesis does not vary with different wavelengths of light.

Accepted Answer

Answers will vary: An example follows. A...

Question 15

Which of these is NOT a major photosynthetic pigment in plants?

Accepted Answer

A)   chlorophyll a
B)   chlorophyll b
C)   chlorophyll c
D)   carotenoid pigmentsE) A) and B)
F) None of the above C

Question 16

Label the diagram using the word bank: NADPH, NADP, ATP, ADP + P, carbon dioxide, oxygen, carbohydrate, water. Briefly explain the significance of each item.
-F is _________.
F is NADPH. The coenzyme, NADPH, is reduced in the light reactions by electrons coming from the electron acceptors in PSI. NADPH will be used to reduce carbon dioxide to carbohydrate in the Calvin Cycle. Incorrect

Accepted Answer

Answers: Water: Water is split in the li...

Question 17

Which statement is NOT true about the noncyclic electron pathway?

Accepted Answer

A)   Electrons are boosted to higher energy level in Photosystem I.
B)   Sunlight excites electrons in Photosystem II.
C)   It produces ATP.
D)   It produces NADPH.
E)   It produces carbohydrates through carbon dioxide fixation.F) B) and E)
G) None of the above

Question 18

immediately becomes a six-carbon sugar that is the base for starch, sucrose, cellulose, etc.

Accepted Answer

A) True 
 B)False

Question 19

Label the diagram using the word bank: NADPH, NADP, ATP, ADP + P, carbon dioxide, oxygen, carbohydrate, water. Briefly explain the significance of each item.
-E is _________.
E is NADP. NADP is the oxidized form of NADPH. It is recycled back to the Light Reactions where it will gain electrons and hydrogens, once again reduced and able to be used in the Calvin Cycle. Incorrect

Accepted Answer

Answers: Water: Water is split in the li...

Question 20

Which statement is NOT true about photosystems? ev: 11_0_2012

Accepted Answer

A)   Photosystem I passes electrons on to Photosystem II.
B)   Each photosystem contains numerous pigment molecules that act as antennas to capture light.
C)   Photosystem II contains a reaction center molecule that loses electrons which are then replaced by electrons from water.
D)   Electrons in the reaction center molecule are excited by absorbed solar energy and are passed along to an acceptor molecule.E) C) and D)
F) B) and D)

Exam 7: Photosynthesis

While C-4 plants have carbon dioxide fixation and carbon dioxide uptake separated by location within the plant, CAM plants

Correct Answer
verified

Correct Answer
verified

is a reaction assisted by large quantities of RuBP carboxylase enzyme.

Correct Answer
verified

To what does the term stroma refer?

Correct Answer
verified

Photo respiration occurs mainly in

Correct Answer
verified

When the stomata in a leaf close during the day, then

Correct Answer
verified

Fossil fuels are full of energy stored from photosynthesis millions of years ago.

Correct Answer
verified

A product of photosynthesis, __________, is the chief source of energy for most organisms.

Correct Answer
verified

Plants that conduct C-4 metabolism are desert plants.

Correct Answer
verified
True

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Correct Answer
verified

The function of sunlight in photosynthesis is to

Correct Answer
verified

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Correct Answer
verified

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Correct Answer
verified
False

Create an experiment that tests this null hypothesis: The rate of photosynthesis does not vary with different wavelengths of light.

Correct Answer
verified
Answers will vary: An example follows. A...
View Answer

Which of these is NOT a major photosynthetic pigment in plants?

Correct Answer
verified
C

Correct Answer
verified
Answers: Water: Water is split in the li...
View Answer

Which statement is NOT true about the noncyclic electron pathway?

Correct Answer
verified

immediately becomes a six-carbon sugar that is the base for starch, sucrose, cellulose, etc.

Correct Answer
verified

Correct Answer
verified
Answers: Water: Water is split in the li...
View Answer

Which statement is NOT true about photosystems? ev: 11_0_2012

Correct Answer
verified

Exam 7: Photosynthesis

While C-4 plants have carbon dioxide fixation and carbon dioxide uptake separated by location within the plant, CAM plants

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

is a reaction assisted by large quantities of RuBP carboxylase enzyme.

Correct AnswerverifiedShow Answer

To what does the term stroma refer?

Correct AnswerverifiedShow Answer

Photo respiration occurs mainly in

Correct AnswerverifiedShow Answer

When the stomata in a leaf close during the day, then

Correct AnswerverifiedShow Answer

Fossil fuels are full of energy stored from photosynthesis millions of years ago.

Correct AnswerverifiedShow Answer

A product of photosynthesis, __________, is the chief source of energy for most organisms.

Correct AnswerverifiedShow Answer

Plants that conduct C-4 metabolism are desert plants.

Correct AnswerverifiedTrue

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Correct AnswerverifiedShow Answer

The function of sunlight in photosynthesis is to

Correct AnswerverifiedShow Answer

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Correct AnswerverifiedShow Answer

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Correct AnswerverifiedFalse

Create an experiment that tests this null hypothesis: The rate of photosynthesis does not vary with different wavelengths of light.

Correct AnswerverifiedAnswers will vary: An example follows. A...View AnswerShow Answer

Which of these is NOT a major photosynthetic pigment in plants?

Correct AnswerverifiedC

Correct AnswerverifiedAnswers: Water: Water is split in the li...View AnswerShow Answer

Which statement is NOT true about the noncyclic electron pathway?

Correct AnswerverifiedShow Answer

immediately becomes a six-carbon sugar that is the base for starch, sucrose, cellulose, etc.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedAnswers: Water: Water is split in the li...View AnswerShow Answer

Which statement is NOT true about photosystems? ev: 11_0_2012

Correct AnswerverifiedShow Answer

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True

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False

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Answers will vary: An example follows. A...
View Answer

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C

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Answers: Water: Water is split in the li...
View Answer

Correct Answer
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Correct Answer
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Answers: Water: Water is split in the li...
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