Question 1

The sea slug Elysia chlorotica is green because it contains

Accepted Answer

A)   chlorophyll.
B)   pigments that reflect red and blue light.
C)   algal chromosomes.
D)   enzymes that produce green light.
E)   heme.F) A) and B)
G) D) and E)

Question 2

As this graph shows,photosynthesizing eukaryotes have several pigments and accessory pigments that selectively capture the green wavelengths of photons for photosynthesis.

Accepted Answer

A) True 
 B)False

Question 3

When NADPH _____ in the carbon reactions it is ______ forming NADP+.

Accepted Answer

A)   donates electrons; reduced
B)   accepts electrons; reduced
C)   accepts electrons; oxidized
D)   donates electrons; oxidizedE) A) and D)
F) B) and C)

Question 4

The primary pigment molecule needed for photosynthesis is

Accepted Answer

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

Question 5

Organisms that make their own organic compounds from inorganic substances are called

Accepted Answer

A)   heterotrophs.
B)   animals.
C)   autotrophs.
D)   animorphs.E) None of the above
F) B) and C)

Question 6

A gelatinous fluid inside the chloroplast containing ribosomes,DNA,and enzymes is the

Accepted Answer

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

Question 7

In this cross-section of a typical plant leaf,the ______ are where photosynthesis takes place.

Accepted Answer

A)   mesophyll cells
B)   outer epidermis cells
C)   air spaces
D)   stomataE) B) and C)
F) All of the above

Question 8

The energy sources needed for the light reactions and the carbon reactions respectively are

Accepted Answer

A)   sunlight and ATP.
B)   sunlight and carbon dioxide.
C)   ATP and carbon dioxide.
D)   Sunlight serves as the energy source for both sets of photosynthetic reactions.
E)   ATP and sunlight.F) C) and E)
G) A) and B)

Question 9

If ozone layers in the atmosphere are depleted

Accepted Answer

A)   less visible wavelength radiation will reach the Earth's surface, causing an increase in photosynthesis.
B)   less infrared wavelength radiation will reach the Earth's surface, causing global warming.
C)   more infrared wavelength radiation will reach the Earth's surface, causing more cases of skin cancer.
D)   more ultraviolet wavelength radiation will reach the Earth's surface, causing more genetic damage to organisms.
E)   less ultraviolet wavelength radiation will reach the Earth's surface, causing global cooling.F) D) and E)
G) A) and B)

Question 10

Figuer:
Examine this image, showing an electron transport chain in photosynthesis. 
-Photosystem I and photosystem II are respectively part of

Accepted Answer

A)   the carbon reactions only.
B)   the light reactions and the carbon reactions.
C)   the carbon reaction and the light reactions.
D)   respiration.
E)   the light reactions only.F) A) and E)
G) B) and D)

Question 11

The carbon atoms in cellulose found in a log originally came from _____ absorbed by the plant.

Accepted Answer

A)   oxygen in the atmosphere,
B)   carbon dioxide in the air,
C)   nutrients in the soil,
D)   glucose in the roots,
E)   water in the soil,F) C) and E)
G) B) and C)

Question 12

How do CAM plants minimize photorespiration?

Accepted Answer

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

Question 13

Photosystem II produces

Accepted Answer

A)   oxygen.
B)   high-energy electrons.
C)   both oxygen and high-energy electrons.
D)   water.
E)   NADPH.F) A) and D)
G) All of the above

Question 14

Photosynthesis is the only form of autotrophic energy transfers among organisms in Earth's habitats.

Accepted Answer

A) True 
 B)False

Question 15

How did the scientists rule out that the chloroplasts could function outside of a host cell?

Accepted Answer

A)   They shined light on the chloroplasts and looked for oxygen production.
B)   They found the algal photosystem II psbO gene in the sea slug chromosomes.
C)   They injected the chloroplasts into a heterotrophic bacteria and it could now perform photosynthesis.
D)   The chloroplast chromosomes were missing photosystem II gene psbO.
E)   They did not find the photosystem II psbO gene in the puffer fish chromosomes.F) A) and E)
G) D) and E)

Question 16

Figuer:
Examine this image, showing an electron transport chain in photosynthesis. 
-The electrons flowing through the electron transport chains in photosynthesis come from ____ and end up being carried by _____.

Accepted Answer

A)   oxygen; NADPH
B)   NADPH; water
C)   NADPH; oxygen
D)   oxygen; water
E)   water; NADPHF) B) and C)
G) C) and D)

Question 17

Rubisco combines ribulose bisphosphate with carbon from

Accepted Answer

A)   carbon dioxide.
B)   carbon monoxide.
C)   glucose.
D)   organic compounds.
E)   ATP.F) A) and C)
G) C) and D)

Question 18

When researchers Rumpho and Manhart looked at the genomes of sea slugs and chloroplasts,what hypothesis were they testing?

Accepted Answer

A)   that only photosystem II is necessary for photosynthesis
B)   that some sea slug genes were present in chloroplast chromosomes
C)   that the sea slugs have to continuously consume chloroplasts to replace the older ones
D)   that chloroplasts can function without some proteins involved in photosynthesis
E)   that some chloroplast genes were present in the sea slug chromosomesF) All of the above
G) B) and E)

Question 19

The light reactions use ATP as their energy source.

Accepted Answer

A) True 
 B)False

Question 20

The primary photosynthetic pigment,chlorophyll a,reflects most orange light that reaches it.

Accepted Answer

A) True 
 B)False

Exam 5: Photosynthesis

When researchers Rumpho and Manhart looked at the genomes of sea slugs and chloroplasts,what hypothesis were they testing?

Correct AnswerverifiedShow Answer

Organisms that make their own organic compounds from inorganic substances are called

Correct AnswerverifiedShow Answer

In this cross-section of a typical plant leaf,the ______ are where photosynthesis takes place.

Correct AnswerverifiedShow Answer

The sea slug Elysia chlorotica is green because it contains

Correct AnswerverifiedShow Answer

How did the scientists rule out that the chloroplasts could function outside of a host cell?

Correct AnswerverifiedShow Answer

As this graph shows,photosynthesizing eukaryotes have several pigments and accessory pigments that selectively capture the green wavelengths of photons for photosynthesis.

Correct AnswerverifiedShow Answer

The carbon atoms in cellulose found in a log originally came from _____ absorbed by the plant.

Correct AnswerverifiedShow Answer

If ozone layers in the atmosphere are depleted

Correct AnswerverifiedShow Answer

Figuer: Examine this image, showing an electron transport chain in photosynthesis. -The electrons flowing through the electron transport chains in photosynthesis come from ____ and end up being carried by _____.

Correct AnswerverifiedShow Answer

Photosystem II produces

Correct AnswerverifiedShow Answer

Photosynthesis is the only form of autotrophic energy transfers among organisms in Earth's habitats.

Correct AnswerverifiedShow Answer

When NADPH _____ in the carbon reactions it is ______ forming NADP+.

Correct AnswerverifiedShow Answer

How do CAM plants minimize photorespiration?

Correct AnswerverifiedShow Answer

The primary pigment molecule needed for photosynthesis is

Correct AnswerverifiedShow Answer

Figuer: Examine this image, showing an electron transport chain in photosynthesis. -Photosystem I and photosystem II are respectively part of

Correct AnswerverifiedShow Answer

The energy sources needed for the light reactions and the carbon reactions respectively are

Correct AnswerverifiedShow Answer

Rubisco combines ribulose bisphosphate with carbon from

Correct AnswerverifiedShow Answer

The light reactions use ATP as their energy source.

Correct AnswerverifiedShow Answer

A gelatinous fluid inside the chloroplast containing ribosomes,DNA,and enzymes is the

Correct AnswerverifiedShow Answer

The primary photosynthetic pigment,chlorophyll a,reflects most orange light that reaches it.

Correct AnswerverifiedShow Answer

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Figuer: Examine this image, showing an electron transport chain in photosynthesis. -The electrons flowing through the electron transport chains in photosynthesis come from and end up being carried by _.

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When NADPH _ in the carbon reactions it is __ forming NADP⁺.

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