Question 1

If ozone layers in the atmosphere are depleted:

Accepted Answer

A)  more ultraviolet wavelengths will reach the earth's surface causing more cases of skin cancer.
B)  more infrared wavelengths will reach the earth's surface, causing more cases of skin cancer.
C)  fewer ultraviolet wavelengths will reach the earth's surface, causing global cooling.
D)  fewer visible wavelengths will reach the earth's surface, causing an increase in photosynthesis.
E)  fewer infrared wavelengths will reach the earth's surface, causing global warming.F) A) and B)
G) D) and E)

Question 2

How are algal chloroplasts able to perform photosynthesis in a sea slug?

Accepted Answer

A)  Other animals like puffer fish contain the algal photosystem II gene psbO and perform photosynthesis.
B)  The chloroplast chromosomes were missing the photosystem II gene psbO.
C)  The chloroplasts can perform photosynthesis if removed from an algal cell.
D)  The sea slug chromosomes contain the algal photosystem II gene psbO.
E)  The chloroplasts can function without the photosystem II gene psbO.F) A) and B)
G) None of the above

Question 3

Photosystem II produces:

Accepted Answer

A)  water.
B)  NADPH.
C)  glucose.
D)  NADH.
E)  ATP.F) A) and D)
G) A) and C)

Question 4

The sea slug Elysia chlorotica is:

Accepted Answer

A)  an autotrophic plant.
B)  an autotrophic protist.
C)  a heterotrophic protist.
D)  a heterotrophic animal.
E)  a heterotrophic plant.F) B) and D)
G) All of the above

Question 5

The main product of the carbon reactions is:

Accepted Answer

A)  oxygen.
B)  NADPH.
C)  carbon dioxide.
D)  glucose.
E)  ATP.F) C) and D)
G) All of the above

Question 6

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

Accepted Answer

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

Question 7

Chloroplasts contain their own DNA,but the genes on these chromosomes only encode about 10% of the proteins required for photosynthesis.This is evidence for:

Accepted Answer

A)  competition.
B)  photosynthesis.
C)  predation.
D)  parasitism.
E)  endosymbiosis.F) B) and C)
G) A) and E)

Question 8

The primary pigment needed for photosynthesis is:

Accepted Answer

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

Question 9

Before photosynthetic cells became abundant,_____ would not be widespread.

Accepted Answer

A)  chemoautotrophs
B)  cells using anaerobic respiration
C)  heterotrophs
D)  cells using aerobic respirationE) B) and C)
F) A) and D)

Question 10

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

Accepted Answer

A)  glucose
B)  carbon dioxide
C)  nutrients in the soil
D)  water
E)  oxygenF) B) and D)
G) B) and E)

Question 11

Which organism's life depends on photosynthesis?

Accepted Answer

A)  Coral
B)  An oak tree
C)  Humans
D)  The sea slug Elysia chlorotica
E)  All are correctF) B) and E)
G) A) and B)

Question 12

The proportion of oxygen in our atmosphere today is about:

Accepted Answer

A)  30%.
B)  2%.
C)  5%.
D)  10%.
E)  20%.F) All of the above
G) B) and C)

Question 13

What is released at each step in an electron transport chain?

Accepted Answer

A)  Ultraviolet wavelengths
B)  Electrons
C)  Photons
D)  Energy
E)  All are correctF) A) and C)
G) C) and D)

Question 14

The light reactions use ATP as their energy source.

Accepted Answer

A) True 
 B)False

Question 15

The main product of photosynthesis is:

Accepted Answer

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

Question 16

Photosynthesis:

Accepted Answer

A)  is not dependent on chlorophyll.
B)  is not an oxidation-reduction reaction.
C)  is a process that produces water and carbon dioxide.
D)  is a process that produces glucose and oxygen.
E)  none are correctF) A) and E)
G) B) and D)

Question 17

Blue light has ___ energy than red light and is ____ by a green leaf.

Accepted Answer

A)  less, reflected
B)  less, absorbed
C)  more, reflected
D)  more, absorbedE) A) and B)
F) B) and C)

Exam 5: Photosynthesis

The proportion of oxygen in our atmosphere today is about:

Correct Answer
verified

The sea slug Elysia chlorotica is:

Correct Answer
verified

Before photosynthetic cells became abundant,_____ would not be widespread.

Correct Answer
verified

Photosynthesis:

Correct Answer
verified

The main product of the carbon reactions is:

Correct Answer
verified

Chloroplasts contain their own DNA,but the genes on these chromosomes only encode about 10% of the proteins required for photosynthesis.This is evidence for:

Correct Answer
verified

The main product of photosynthesis is:

Correct Answer
verified

What is released at each step in an electron transport chain?

Correct Answer
verified

Photosystem II produces:

Correct Answer
verified

How are algal chloroplasts able to perform photosynthesis in a sea slug?

Correct Answer
verified

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

Correct Answer
verified

The light reactions use ATP as their energy source.

Correct Answer
verified

The primary pigment needed for photosynthesis is:

Correct Answer
verified

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

Correct Answer
verified

Blue light has _ energy than red light and is __ by a green leaf.

Correct Answer
verified

If ozone layers in the atmosphere are depleted:

Correct Answer
verified

Which organism's life depends on photosynthesis?

Correct Answer
verified

Exam 5: Photosynthesis

The proportion of oxygen in our atmosphere today is about:

Correct AnswerverifiedShow Answer

The sea slug Elysia chlorotica is:

Correct AnswerverifiedShow Answer

Before photosynthetic cells became abundant,_____ would not be widespread.

Correct AnswerverifiedShow Answer

Photosynthesis:

Correct AnswerverifiedShow Answer

The main product of the carbon reactions is:

Correct AnswerverifiedShow Answer

Chloroplasts contain their own DNA,but the genes on these chromosomes only encode about 10% of the proteins required for photosynthesis.This is evidence for:

Correct AnswerverifiedShow Answer

The main product of photosynthesis is:

Correct AnswerverifiedShow Answer

What is released at each step in an electron transport chain?

Correct AnswerverifiedShow Answer

Photosystem II produces:

Correct AnswerverifiedShow Answer

How are algal chloroplasts able to perform photosynthesis in a sea slug?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The light reactions use ATP as their energy source.

Correct AnswerverifiedShow Answer

The primary pigment needed for photosynthesis is:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Blue light has ___ energy than red light and is ____ by a green leaf.

Correct AnswerverifiedShow Answer

If ozone layers in the atmosphere are depleted:

Correct AnswerverifiedShow Answer

Which organism's life depends on photosynthesis?

Correct AnswerverifiedShow Answer

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Blue light has _ energy than red light and is __ by a green leaf.

Correct Answer
verified

Correct Answer
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Correct Answer
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