Question 1

Over time,what would we expect in the evolution of C3,C4,and CAM strategies?

Accepted Answer

A)  As the most complicated plants,CAM plants are most likely to go extinct.
B)  As the probable ancestral form of photosynthesis,C3 plants are primitive and most likely to go extinct.
C)  Because CAM plants make better usage of metabolism during the night,they are superior and will eventually become the dominant plants.
D)  Because CO2 is delivered by the bundle sheath cells in C4 plants,they are superior and will eventually dominate.
E)  Each form of photosynthesis has advantages in a heterogeneous world and,as long as environmental conditions vary,all forms will have an adaptive advantage in their unique niche.F) A) and D)
G) A) and E)

Question 2

Which of these is most closely associated with the process of electron transport?

Accepted Answer

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

Question 3

At night,plants cannot run metabolic pathways because there is no sunlight.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is NOT a characteristic shared by cellular respiration and photosynthesis?

Accepted Answer

A)  Both photosynthesis and cellular respiration occur in plant cells.
B)  Both processes produce ATP by chemiosmosis.
C)  Both processes produce oxygen.
D)  Both processes use an electron transport chain located in membranes of organelles.
E)  One or more electron carriers are used in both processes.F) A) and B)
G) None of the above

Question 5

Which of the following statements comparing the ATP synthase complex in cellular respiration and photosynthesis is not true?

Accepted Answer

A)  Both require the movement of H+ from inside a compartment to outside of the compartment.
B)  Both produce ATP.
C)  Both work via chemiosmosis.
D)  Both require a H+ gradient.
E)  Both are located in a membrane.F) None of the above
G) C) and D) A

Question 6

How many membranes does a chloroplast have?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  fiveF) A) and B)
G) C) and D)

Question 7

The cyclic electron pathway produces only

Accepted Answer

A)  NADPH.
B)  ATP.
C)  NAD+.
D)  oxygen.
E)  carbon dioxide.F) C) and D)
G) A) and B)

Question 8

Why does the chloroplast utilize a cyclic electron pathway as well as the noncyclic electron pathway?

Accepted Answer

A)  The noncyclic electron pathway does not provide enough NADPH for the cell.
B)  The noncyclic electron pathway does not provide enough oxygen for the cell.
C)  The Calvin cycle utilizes more NADPH than ATP and the cyclic electron pathway produces NADPH.
D)  The Calvin cycle utilizes more ATP than NADPH and the cyclic electron pathway produces ATP.
E)  The cyclic electron pathway only runs when oxygen is limiting.F) A) and D)
G) A) and E)

Question 9

At the base of most food chains are autotrophs.

Accepted Answer

A) True 
 B)False

Question 10

Explain why chlorophyll appears green to our eyes.

Accepted Answer

When the wavelengths of visible light en...

Question 11

What is the value of photosynthesis to humans?

Accepted Answer

A)  It results in the production of fatty acids and oxygen.
B)  It results in the production of proteins and oxygen.
C)  It will convert carbohydrates into usable forms of energy for humans.
D)  It will reduce the amount of methane in the atmosphere.
E)  It will reduce the amount of carbon dioxide in the atmosphere.F) B) and C)
G) A) and E)

Question 12

In what ways are photosynthesis and cellular respiration not alike?

Accepted Answer

A)  Both will use the electron carrier NADH.
B)  Both require ATP.
C)  Both require a membrane.
D)  Both require a cyclical enzymatic pathway.
E)  Both require an electron transport chain.F) A) and B)
G) B) and E) A

Question 13

One of the products of the Calvin cycle is

Accepted Answer

A)  PS I.
B)  RuBP carboxylase.
C)  3PG.
D)  G3P.
E)  RuBP.F) A) and C)
G) D) and E)

Question 14

The formation of carbohydrate occurs within the

Accepted Answer

A)  stroma.
B)  outer chloroplast membrane.
C)  inner chloroplast membrane.
D)  thylakoid membranes.
E)  thylakoid space.F) All of the above
G) A) and D)

Question 15

The raw materials or reactants of the photosynthetic process include

Accepted Answer

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

Question 16

We set up an experiment where the same species of plant is grown in boxes covered with plastic that only allows a single color of light through.In which box would we expect the least plant growth and even perhaps the death of the plant to occur?

Accepted Answer

A)  white
B)  blue
C)  red
D)  green
E)  indigoF) A) and D)
G) A) and B)

Question 17

Which photosynthetic mode would be most favorable in a desert environment?

Accepted Answer

A)  CAM
B)  C3
C)  C4
D)  both CAM and C3
E)  CAM,C3,and C4F) A) and D)
G) A) and B)

Question 18

Which statement is accurate about how C4 plants are able to survive hot,dry spells during the growing season?

Accepted Answer

A)  When the stomata close during heat stress,RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf.This allows the plant to avoid photorespiration.
B)  When the stomata close during heat stress,RuBP carboxylase is exposed to the increase in oxygen concentration experienced in the leaf.This allows the plant to avoid photorespiration.
C)  When the stomata open during heat stress,RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf.This allows the plant to avoid photorespiration.
D)  When the stomata close during heat stress,RuBP carboxylase is exposed to the increase in oxygen concentration experienced in the leaf.This allows the plant to undergo photorespiration.
E)  When the stomata open during heat stress,RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf.This allows the plant to undergo photorespiration.F) D) and E)
G) A) and D)

Question 19

Visible light has more energy than radio waves.

Accepted Answer

A) True 
 B)False

Question 20

Only organisms with chloroplasts are capable of photosynthesis.

Accepted Answer

A) True 
 B)False  False

Exam 8: Photosynthesis

Over time,what would we expect in the evolution of C3,C4,and CAM strategies?

Correct AnswerverifiedShow Answer

Which of these is most closely associated with the process of electron transport?

Correct AnswerverifiedShow Answer

At night,plants cannot run metabolic pathways because there is no sunlight.

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic shared by cellular respiration and photosynthesis?

Correct AnswerverifiedShow Answer

Which of the following statements comparing the ATP synthase complex in cellular respiration and photosynthesis is not true?

Correct AnswerverifiedA

How many membranes does a chloroplast have?

Correct AnswerverifiedShow Answer

The cyclic electron pathway produces only

Correct AnswerverifiedShow Answer

Why does the chloroplast utilize a cyclic electron pathway as well as the noncyclic electron pathway?

Correct AnswerverifiedShow Answer

At the base of most food chains are autotrophs.

Correct AnswerverifiedShow Answer

Explain why chlorophyll appears green to our eyes.

Correct AnswerverifiedWhen the wavelengths of visible light en...View AnswerShow Answer

What is the value of photosynthesis to humans?

Correct AnswerverifiedShow Answer

In what ways are photosynthesis and cellular respiration not alike?

Correct AnswerverifiedA

One of the products of the Calvin cycle is

Correct AnswerverifiedShow Answer

The formation of carbohydrate occurs within the

Correct AnswerverifiedShow Answer

The raw materials or reactants of the photosynthetic process include

Correct AnswerverifiedShow Answer

We set up an experiment where the same species of plant is grown in boxes covered with plastic that only allows a single color of light through.In which box would we expect the least plant growth and even perhaps the death of the plant to occur?

Correct AnswerverifiedShow Answer

Which photosynthetic mode would be most favorable in a desert environment?

Correct AnswerverifiedShow Answer

Which statement is accurate about how C4 plants are able to survive hot,dry spells during the growing season?

Correct AnswerverifiedShow Answer

Visible light has more energy than radio waves.

Correct AnswerverifiedShow Answer

Only organisms with chloroplasts are capable of photosynthesis.

Correct AnswerverifiedFalse

Over time,what would we expect in the evolution of C₃,C₄,and CAM strategies?

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A

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When the wavelengths of visible light en...
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A

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Which statement is accurate about how C₄ plants are able to survive hot,dry spells during the growing season?

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False