Question 1

Identify the incorrect pairing of photosynthetic carbon pathways and the type of habitat in which they live.

Accepted Answer

A)   CAM pathway plants are found in desert habitats.
B)   All of these correctly match the pathway and the habitat.
C)   C4 pathway plants are found in hot, open, grassy areas. 
D)   C3 pathway plants are found in most habitat areas.E) A) and D)
F) A) and C)

Question 2

For most lawn grasses to grow well in hot,dry weather,they must be watered so that their stomata will remain open for longer periods of time to let in O2.

Accepted Answer

A) True 
 B)False

Question 3

When chlorophyll a absorbs light,electrons are "excited" and ejected from the chlorophyll a molecule.

Accepted Answer

A) True 
 B)False  True

Question 4

The main organic product of photosynthesis is

Accepted Answer

A)   sunlight.
B)   oxygen.
C)   glucose.
D)   carbon dioxide.
E)   chlorophyll.F) C) and E)
G) C) and D)

Question 5

Examples of accessory pigments for photosynthesis are

Accepted Answer

A)   chlorophyll a and chlorophyll b.
B)   mitochondria.
C)   carotenoids, chlorophyll b, and chlorophyll a..
D)   chlorophyll a and carotenoids.
E)   chlorophyll b and carotenoidsF) D) and E)
G) All of the above

Question 6

Combustion is an inorganic chemical reaction,with the net result of burning a log being a reverse reaction from photosynthesis.What products would be formed in burning a log?

Accepted Answer

A)   carbon dioxide and glucose
B)   oxygen and carbon dioxide
C)   oxygen and water
D)   carbon dioxide and water
E)   glucose and oxygenF) A) and B)
G) C) and E)

Question 7

The sea slug Elysia chlorotica is a(n)

Accepted Answer

A)   heterotrophic plant.
B)   heterotrophic animal.
C)   heterotrophic protist.
D)   autotrophic plant.
E)   autotrophic protist.F) A) and D)
G) B) and E)

Question 8

In plant cells,a membrane studded with photosynthetic pigments in plant cells is the

Accepted Answer

A)   thylakoid.
B)   stroma.
C)   chlorophyll.
D)   chloroplast.
E)   granum.F) A) and C)
G) D) and E) A

Question 9

In photosynthesis,the carbon in CO2 is being _____ to form glucose.

Accepted Answer

A)   reduced
B)   broken down
C)   oxidized
D)   respired
E)   energizedF) D) and E)
G) A) and C)

Question 10

What is a product of the electron transport chain started by photosystem II?

Accepted Answer

A)   glucose
B)   ADP
C)   oxygen
D)   water
E)   NADPHF) A) and B)
G) A) and C)

Question 11

If a thylakoid is placed in a basic solution ATP synthesis will occur.How is this possible?

Accepted Answer

A)   An electron gradient is created by the difference in pH.
B)   A proton gradient is created by the difference in pH.
C)   ATP is formed spontaneously at low pH.
D)   ATP cannot be broken down at low pH.
E)   The carbon reactions are blocked in the thylakoid at high pH.F) A) and B)
G) B) and C)

Question 12

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

Accepted Answer

A)   to combine with NADP+ to form NADPH
B)   as an electron donor in the photosystems
C)   as a substrate for ATP synthase
D)   as an electron acceptor in the electron transport chain
E)   to combine with ADP forming ATPF) B) and D)
G) B) and E)

Question 13

How do C4 plants minimize photorespiration?

Accepted Answer

A)   The light reactions and carbon reactions occur in different cells, so carbon dioxide does not come into contact with rubisco.
B)   Stomata are only opened at night, storing oxygen in malate. During the day the oxygen is released for photosynthesis.
C)   Stomata are only opened at night, storing carbon dioxide in malate. During the day the carbon dioxide is released for photosynthesis.
D)   The light reactions and carbon reactions occur in different cells, so oxygen does not come into contact with rubisco.E) B) and C)
F) All of the above

Question 14

C4 plants and CAM plants fix carbon twice during the photosynthetic reactions.

Accepted Answer

A) True 
 B)False

Question 15

Which of these groups represents organisms that are heterotrophs?

Accepted Answer

A)   microorganisms that harness solar energy, converting it to chemical energy
B)   non-photosynthesizing bacteria, fungi, earthworms
C)   all organisms that developed after photosynthesis
D)   photosynthesizing bacteria, algae, ferns, pine treesE) A) and C)
F) B) and C)

Question 16

Which plants keep their stomata open only at night?

Accepted Answer

A)   C4
B)   C3
C)   CAMD) A) and B)
E) B) and C)

Question 17

Figuer:
Examine this image, showing an electron transport chain in photosynthesis. 
-What is released at each step in an electron transport chain?

Accepted Answer

A)   ultraviolet wavelengths
B)   electrons
C)   energy
D)   photonsE) B) and D)
F) C) and D) C

Question 18

Which of these organisms can carry out photosynthesis?

Accepted Answer

A)   algae
B)   cyanobacteria
C)   plants, algae, and cyanobacteria
D)   plants
E)   a coralF) A) and B)
G) A) and C)

Question 19

Which organism depends on photosynthesis for its life?

Accepted Answer

A)   All of the answer choices are correct.
B)   a human
C)   an oak tree
D)   a coral
E)   a sea slugF) None of the above
G) D) and E)

Question 20

Photosynthesis is

Accepted Answer

A)   not an oxidation-reduction reaction.
B)   an energy transfer process that produces glucose and oxygen.
C)   a chemical process not dependent on chlorophyll.
D)   None of the answer choices are correct.
E)   a set of reactions that produces water and carbon dioxide.F) All of the above
G) A) and B)

Exam 5: Photosynthesis

Identify the incorrect pairing of photosynthetic carbon pathways and the type of habitat in which they live.

Correct AnswerverifiedShow Answer

For most lawn grasses to grow well in hot,dry weather,they must be watered so that their stomata will remain open for longer periods of time to let in O2.

Correct AnswerverifiedShow Answer

When chlorophyll a absorbs light,electrons are "excited" and ejected from the chlorophyll a molecule.

Correct AnswerverifiedTrue

The main organic product of photosynthesis is

Correct AnswerverifiedShow Answer

Examples of accessory pigments for photosynthesis are

Correct AnswerverifiedShow Answer

Combustion is an inorganic chemical reaction,with the net result of burning a log being a reverse reaction from photosynthesis.What products would be formed in burning a log?

Correct AnswerverifiedShow Answer

The sea slug Elysia chlorotica is a(n)

Correct AnswerverifiedShow Answer

In plant cells,a membrane studded with photosynthetic pigments in plant cells is the

Correct AnswerverifiedA

In photosynthesis,the carbon in CO2 is being _____ to form glucose.

Correct AnswerverifiedShow Answer

What is a product of the electron transport chain started by photosystem II?

Correct AnswerverifiedShow Answer

If a thylakoid is placed in a basic solution ATP synthesis will occur.How is this possible?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How do C4 plants minimize photorespiration?

Correct AnswerverifiedShow Answer

C4 plants and CAM plants fix carbon twice during the photosynthetic reactions.

Correct AnswerverifiedShow Answer

Which of these groups represents organisms that are heterotrophs?

Correct AnswerverifiedShow Answer

Which plants keep their stomata open only at night?

Correct AnswerverifiedShow Answer

Figuer: Examine this image, showing an electron transport chain in photosynthesis. -What is released at each step in an electron transport chain?

Correct AnswerverifiedC

Which of these organisms can carry out photosynthesis?

Correct AnswerverifiedShow Answer

Which organism depends on photosynthesis for its life?

Correct AnswerverifiedShow Answer

Photosynthesis is

Correct AnswerverifiedShow Answer

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For most lawn grasses to grow well in hot,dry weather,they must be watered so that their stomata will remain open for longer periods of time to let in O₂.

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True

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A

In photosynthesis,the carbon in CO₂ is being _____ to form glucose.

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How do C₄ plants minimize photorespiration?

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C₄ plants and CAM plants fix carbon twice during the photosynthetic reactions.

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C

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