Question 1

Plants that conduct C-4 metabolism are desert plants.

Accepted Answer

A) True 
 B)False

Question 2

forms a six-carbon molecule that immediately breaks down into two three-carbon PGA molecules.

Accepted Answer

A) True 
 B)False

Question 3

When an electron has been excited to a higher energy state,it can then drop back to the original level,re-emitting the light as fluorescence.When chlorophyll is extracted in solution,and a bright red or blue light is shown on it,the chlorophyll fluoresces brightly.However,when the chlorophyll is packaged inside chloroplasts and the red or blue light is turned on,there is no fluorescence.This most likely indicates that

Accepted Answer

A)  the red and blue light waves are reflected by the chlorophyll membrane.
B)  chlorophyll in solution is a different molecule than chlorophyll in a chloroplast.
C)  excited electrons are transferred to electron acceptors in the chloroplast.
D)  fluorescence does not work in living cells.
E)  green light must be used to make living cells fluoresce.F) A) and D)
G) B) and D)

Question 4

What structure is required for an organism to be classified as an autotroph?

Accepted Answer

A)  chloroplast
B)  mitochondria
C)  nucleus
D)  Golgi BodyE) A) and B)
F) A) and C)

Question 5

Which of the following statements about the Calvin cycle is correct?

Accepted Answer

A)  the CO2 is absorbed and reduced to CH2O
B)  the CO2 is absorbed and reduced to C2H2O2
C)  the CO- is absorbed and reduced to CH2O
D)  the CO2 is absorbed and used to form ATPE) All of the above
F) None of the above

Question 6

Which of the following plants is an example of a CAM plant?

Accepted Answer

A)  cactus
B)  corn
C)  rice
D)  wheat
E)  oak treeF) A) and B)
G) A) and C)

Question 7

To what does the term stroma refer?

Accepted Answer

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

Question 8

An early experiment by Van Helmont (1600s) describes how he "grew a tree in a large pot and found that after five years,the amount of soil in the pot had not changed.He concluded that the increase in weight was due to the addition of water." At that time,the compounds in the air had not yet been identified.Today,you know that he only discovered half the story.Which additional experiment would provide evidence for the rest of the story?

Accepted Answer

A)  A very careful audit of the water taken in and lost by the tree would have revealed only half the added weight gained by the tree.
B)  Carbon is discovered as a major element in trees and is lacking in water molecules.
C)  Radioactive carbon in CO2 in the air is soon located as part of tree structures.
D)  The critical experiment involves the conversion of nutrients in the soil.
E)  All but the nutrient conversion is correct.F) A) and E)
G) None of the above

Question 9

Phosphoenylpyruvate carboxylase (PEPCase)fixes carbon dioxide(C1)to PEP(C3)to form oxaloacetate(C4)within mesophyll cells of the C-4 plants.

Accepted Answer

A) True 
 B)False

Question 10

During the light reactions what structure is responsible for absorbing the solar energy?

Accepted Answer

A)  chloroplast
B)  stroma
C)  stoma
D)  bark of the treeE) B) and D)
F) A) and C)

Question 11

Protons (H+) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Accepted Answer

A)  enters the photorespiration pathway.
B)  converts NADP to NADPH and generates ATP in the process.
C)  is small enough to diffuse back out through the lipid bilayer.
D)  raises the pH of the space until the processes stop.
E)  moves from the thylakoid space to the stroma through an ATP synthase complex channel that generates ATP.F) A) and B)
G) A) and C)

Question 12

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Accepted Answer

A) True 
 B)False

Question 13

What are the end products of photosynthesis?

Accepted Answer

A)  water and carbon dioxide
B)  water and oxygen
C)  oxygen and carbohydrate
D)  carbohydrate and waterE) A) and B)
F) B) and C)

Question 14

Which of the following pairs is correct?

Accepted Answer

A)  C4 plants = bundle sheath cells contain chlorophyll
B)  C3 plants = bundle sheath cells contain chlorophyll
C)  CAM plants = epidermal cells that contain chlorophyll
D)  C4 plants = stoma that contain chlorophyllE) B) and C)
F) A) and D)

Question 15

Which is most closely associated with the Calvin cycle?

Accepted Answer

A)  ATP production
B)  oxygen production
C)  carbon dioxide fixation
D)  carbon dioxide production
E)  removal of electrons from water for passage through an electron transport systemF) C) and D)
G) A) and B)

Question 16

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Accepted Answer

A)  they are taken up by NADP+ to produce NADPH
B)  they are taken up by NADPH to produce NADP+
C)  they are taken up by NADH to produce NAD+
D)  they are taken up by NAD+ to produce NADHE) A) and B)
F) C) and D)

Question 17

Why are plants green?

Accepted Answer

A)  They absorb only green wavelengths of light.
B)  They absorb only yellow and blue wavelengths of light.
C)  They reflect nearly all wavelengths of light.
D)  They reflect green wavelengths of light and absorb blue and red light.
E)  They reflect yellow and blue wavelengths of light.F) A) and C)
G) A) and E)

Question 18

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Accepted Answer

A) True 
 B)False

Question 19

C-4 plants

Accepted Answer

A)  store carbon dioxide temporarily as oxaloacetate.
B)  are found in hot dry climates.
C)  have a net photosynthetic rate two to three times that of C-3 plants.
D)  All of the choices are correct.E) None of the above
F) All of the above

Question 20

A product of photosynthesis,__________,is the chief source of energy for most organisms.

Accepted Answer

A)  Oxygen
B)  Sucrose
C)  Glucose
D)  All of the aboveE) C) and D)
F) All of the above

Exam 7: Photosynthesis

What are the end products of photosynthesis?

Correct Answer
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Correct Answer
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Which of the following pairs is correct?

Correct Answer
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The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Correct Answer
verified

Which of the following plants is an example of a CAM plant?

Correct Answer
verified

Plants that conduct C-4 metabolism are desert plants.

Correct Answer
verified

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Correct Answer
verified

Why are plants green?

Correct Answer
verified

forms a six-carbon molecule that immediately breaks down into two three-carbon PGA molecules.

Correct Answer
verified

A product of photosynthesis,__________,is the chief source of energy for most organisms.

Correct Answer
verified

Which is most closely associated with the Calvin cycle?

Correct Answer
verified

To what does the term stroma refer?

Correct Answer
verified

Phosphoenylpyruvate carboxylase (PEPCase)fixes carbon dioxide(C₁)to PEP(C₃)to form oxaloacetate(C₄)within mesophyll cells of the C-4 plants.

Correct Answer
verified

Correct Answer
verified

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Correct Answer
verified

Which of the following statements about the Calvin cycle is correct?

Correct Answer
verified

C-4 plants

Correct Answer
verified

During the light reactions what structure is responsible for absorbing the solar energy?

Correct Answer
verified

Protons (H⁺) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Correct Answer
verified

What structure is required for an organism to be classified as an autotroph?

Correct Answer
verified

Exam 7: Photosynthesis

What are the end products of photosynthesis?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following pairs is correct?

Correct AnswerverifiedShow Answer

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast.

Correct AnswerverifiedShow Answer

Which of the following plants is an example of a CAM plant?

Correct AnswerverifiedShow Answer

Plants that conduct C-4 metabolism are desert plants.

Correct AnswerverifiedShow Answer

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Correct AnswerverifiedShow Answer

Why are plants green?

Correct AnswerverifiedShow Answer

forms a six-carbon molecule that immediately breaks down into two three-carbon PGA molecules.

Correct AnswerverifiedShow Answer

A product of photosynthesis,__________,is the chief source of energy for most organisms.

Correct AnswerverifiedShow Answer

Which is most closely associated with the Calvin cycle?

Correct AnswerverifiedShow Answer

To what does the term stroma refer?

Correct AnswerverifiedShow Answer

Phosphoenylpyruvate carboxylase (PEPCase)fixes carbon dioxide(C1)to PEP(C3)to form oxaloacetate(C4)within mesophyll cells of the C-4 plants.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis?

Correct AnswerverifiedShow Answer

Which of the following statements about the Calvin cycle is correct?

Correct AnswerverifiedShow Answer

C-4 plants

Correct AnswerverifiedShow Answer

During the light reactions what structure is responsible for absorbing the solar energy?

Correct AnswerverifiedShow Answer

Protons (H+) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Correct AnswerverifiedShow Answer

What structure is required for an organism to be classified as an autotroph?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Phosphoenylpyruvate carboxylase (PEPCase)fixes carbon dioxide(C₁)to PEP(C₃)to form oxaloacetate(C₄)within mesophyll cells of the C-4 plants.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Protons (H⁺) accumulate in the thylakoid space during electron transport between photosystems I and II.The excess of protons in the thylakoid space

Correct Answer
verified

Correct Answer
verified