Question 1

Which statement is not true about C3 and C4 plants?

Accepted Answer

A)  C4 plants are more successful in hot climates than C3 plants.
B)  C3 plants fix carbon dioxide in the mesophyll cells.
C)  In C3 plants,O2 competes with CO2 for the active site of RuBP carboxylase.
D)  C4 plants deliver CO2 to the Calvin cycle using bundle sheath cells sheltered from leaf air spaces.
E)  CO2 is fixed at night to decrease water loss.F) A) and D)
G) C) and E)

Question 2

Which statement about photosynthesis and cellular respiration is true?

Accepted Answer

A)  Photosynthesis produces water,while cellular respiration uses water.
B)  Photosynthesis produces oxygen,while cellular respiration uses oxygen.
C)  Photosynthesis occurs in mitochondria,while cellular respiration occurs in chloroplasts.
D)  Photosynthesis breaks down carbohydrates,while cellular respiration produces carbohydrates.
E)  Photosynthesis requires oxygen,while cellular respiration requires sunlight.F) B) and C)
G) All of the above

Question 3

The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the

Accepted Answer

A)  stroma.
B)  thylakoid membrane.
C)  thylakoid space.
D)  cytoplasm.
E)  matrix.F) D) and E)
G) A) and C)

Question 4

To what does the term grana refer?

Accepted Answer

A)  the cytochrome system 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) B) and D)

Question 5

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis.The production of oxygen and,therefore,the beginning of extensive aerobic life was made possible by the evolution of

Accepted Answer

A)  fermentation.
B)  photosystem I.
C)  photosystem II.
D)  glycolysis.
E)  the nucleus.F) B) and C)
G) B) and D)

Question 6

The Calvin cycle reactions are dependent upon a supply of

Accepted Answer

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

Question 7

CAM plants

Accepted Answer

A)  do not perform any part of photosynthesis during the day.
B)  fix CO2 in mesophyll cells during the day.
C)  include economically important food crops like corn and sugarcane.
D)  open their stomata at night to minimize water loss.
E)  typically grow very quickly because they are found in hot,moist environments.F) B) and E)
G) C) and E)

Question 8

The red maple tree cannot photosynthesize because it is not green.

Accepted Answer

A) True 
 B)False

Question 9

How much of the protein content in chloroplasts is made up of the enzyme RuBP carboxylase? Why?

Accepted Answer

A)  less than 1%; the enzyme is very fast
B)  less than 1%; the enzyme also catalyzes several side reactions
C)  20-50%; the enzyme also catalyzes several side reactions
D)  20-50%; the enzyme is very slow
E)  almost 100%; the enzyme is very slowF) B) and D)
G) A) and B)

Question 10

Water is split and oxygen is released in

Accepted Answer

A)  the electron transport chain.
B)  the cyclic electron pathway.
C)  the Calvin cycle reactions.
D)  the noncyclic electron pathway.
E)  photosystem I.F) A) and E)
G) A) and B)

Question 11

The heavy oxygen isotope (18O) could be provided to plants either in the CO2 or in H2O or in both.Today,we know from experimental results that O2 released from chloroplasts comes from H2O and not from CO2.Which of the following experimental results would show conclusively that O2 is released from H2O and not CO2?

Accepted Answer

A)  When heavy oxygen is part of water given to the plant,the plant produces heavy O2.
B)  When heavy oxygen is part of both water and CO2 given to the plant,the plant produces heavy O2.
C)  When no heavy oxygen is part of water given to the plant,the plant produces no heavy O2.
D)  When no heavy oxygen is part of CO2 given to the plant,the plant produces no heavy O2.
E)  When heavy oxygen is part of CO2 given to the plant,the plant produces heavy O2.F) B) and E)
G) A) and D)

Question 12

How many total carbons are involved in carbon dioxide fixation with 3 molecules of carbon dioxide and 3 molecules of RuBP?

Accepted Answer

A)  6
B)  12
C)  18
D)  24
E)  30F) B) and C)
G) D) and E)

Question 13

What are the stages of the Calvin cycle?

Accepted Answer

A)  carbon dioxide fixation and reduction
B)  carbon dioxide fixation and regeneration of RuBP
C)  the noncyclic electron pathway and the cyclic electron pathway
D)  the light reactions,regeneration of RuBP,and cyclic electron pathway
E)  carbon dioxide fixation,carbon dioxide reduction,and regeneration of RuBPF) D) and E)
G) A) and E)

Question 14

At the cellular level,photosynthesis occurs within

Accepted Answer

A)  the chloroplast.
B)  the cristae of the mitochondria.
C)  both chloroplasts and mitochondria.
D)  all plant cell organelles.
E)  the nucleus of plants but not of animals.F) A) and C)
G) None of the above

Question 15

Which of the following allows photosynthetic organisms to capture solar energy?

Accepted Answer

A)  pigments
B)  nucleus
C)  chloroplasts
D)  glucose
E)  NAD+F) A) and C)
G) C) and D)

Question 16

In the process of photosynthesis,the light reactions follow the Calvin cycle reactions.

Accepted Answer

A) True 
 B)False

Question 17

Which part of photosynthesis does not occur inside the thylakoid membrane?

Accepted Answer

A)  noncyclic electron pathway
B)  cyclic electron pathway
C)  electron transport chain
D)  light reactions
E)  Calvin cycle reactionsF) A) and B)
G) None of the above

Question 18

Which of the following statements is false?

Accepted Answer

A)  During cellular respiration,carbohydrate energy is converted into ATP.
B)  During cellular respiration,mitochondria release carbon dioxide.
C)  During photosynthesis,energy from the sun is used to form carbohydrates.
D)  During photosynthesis,carbon dioxide is used.
E)  During photosynthesis,oxygen is used.F) B) and E)
G) None of the above

Question 19

Most major food plants such as wheat,oats,and rice are in the group of

Accepted Answer

A)  nonphotosynthetic plants.
B)  C3 plants.
C)  C4 plants.
D)  C5 plants.
E)  CAM plants.F) C) and E)
G) A) and C)

Question 20

Which of the following is not an autotroph?

Accepted Answer

A)  yeast
B)  oak tree
C)  cyanobacterium
D)  algae
E)  grassF) All of the above
G) A) and D)

Exam 8: Photosynthesis

Which statement is not true about C₃ and C₄ plants?

Correct Answer
verified

The Calvin cycle reactions are dependent upon a supply of

Correct Answer
verified

Water is split and oxygen is released in

Correct Answer
verified

The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the

Correct Answer
verified

Which of the following statements is false?

Correct Answer
verified

Which of the following is not an autotroph?

Correct Answer
verified

To what does the term grana refer?

Correct Answer
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The red maple tree cannot photosynthesize because it is not green.

Correct Answer
verified

Correct Answer
verified

Which part of photosynthesis does not occur inside the thylakoid membrane?

Correct Answer
verified

How many total carbons are involved in carbon dioxide fixation with 3 molecules of carbon dioxide and 3 molecules of RuBP?

Correct Answer
verified

What are the stages of the Calvin cycle?

Correct Answer
verified

In the process of photosynthesis,the light reactions follow the Calvin cycle reactions.

Correct Answer
verified

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis.The production of oxygen and,therefore,the beginning of extensive aerobic life was made possible by the evolution of

Correct Answer
verified

CAM plants

Correct Answer
verified

Most major food plants such as wheat,oats,and rice are in the group of

Correct Answer
verified

How much of the protein content in chloroplasts is made up of the enzyme RuBP carboxylase? Why?

Correct Answer
verified

Which of the following allows photosynthetic organisms to capture solar energy?

Correct Answer
verified

At the cellular level,photosynthesis occurs within

Correct Answer
verified

Which statement about photosynthesis and cellular respiration is true?

Correct Answer
verified

Exam 8: Photosynthesis

Which statement is not true about C3 and C4 plants?

Correct AnswerverifiedShow Answer

The Calvin cycle reactions are dependent upon a supply of

Correct AnswerverifiedShow Answer

Water is split and oxygen is released in

Correct AnswerverifiedShow Answer

The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Which of the following is not an autotroph?

Correct AnswerverifiedShow Answer

To what does the term grana refer?

Correct AnswerverifiedShow Answer

The red maple tree cannot photosynthesize because it is not green.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which part of photosynthesis does not occur inside the thylakoid membrane?

Correct AnswerverifiedShow Answer

How many total carbons are involved in carbon dioxide fixation with 3 molecules of carbon dioxide and 3 molecules of RuBP?

Correct AnswerverifiedShow Answer

What are the stages of the Calvin cycle?

Correct AnswerverifiedShow Answer

In the process of photosynthesis,the light reactions follow the Calvin cycle reactions.

Correct AnswerverifiedShow Answer

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis.The production of oxygen and,therefore,the beginning of extensive aerobic life was made possible by the evolution of

Correct AnswerverifiedShow Answer

CAM plants

Correct AnswerverifiedShow Answer

Most major food plants such as wheat,oats,and rice are in the group of

Correct AnswerverifiedShow Answer

How much of the protein content in chloroplasts is made up of the enzyme RuBP carboxylase? Why?

Correct AnswerverifiedShow Answer

Which of the following allows photosynthetic organisms to capture solar energy?

Correct AnswerverifiedShow Answer

At the cellular level,photosynthesis occurs within

Correct AnswerverifiedShow Answer

Which statement about photosynthesis and cellular respiration is true?

Correct AnswerverifiedShow Answer

Which statement is not true about C₃ and C₄ plants?

Correct Answer
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