Question 1

Which of the following statements describes the function of the electron transport chain (ETC)  in photosynthesis?

Accepted Answer

A)   As electrons move through the ETC, they release energy that is used to concentrate protons in the thylakoid lumen.
B)   As electrons move through the ETC, they catalyze the formation of ATP.
C)   The ETC releases CO₂ from glucose.
D)   The ETC captures and stores the electrons given off by NADPH.E) B) and D)
F) B) and C)

Question 2

The earliest atmosphere of Earth is not believed to have contained oxygen. Which cellular component would not have been useful at that time?

Accepted Answer

A)   chloroplast
B)   nucleus
C)   plasma membrane
D)   mitochondrionE) A) and D)
F) A) and B)

Question 3

The pigments of plant cells capture primarily the wavelengths of light that are colored _____ and _____.

Accepted Answer

red-orange...

Question 4

Glycolysis occurs in the _______ of a cell.

Accepted Answer

A)   nucleus
B)   chloroplast
C)   mitochondrion
D)   cytosolE) A) and D)
F) All of the above

Question 5

The growth of corn as a biofuel requires a great deal of fertilizer and gas-powered machinery. When processed, corn produces relatively low amounts of biodiesel. Is biodiesel made from corn carbon neutral?

Accepted Answer

A)   Yes. The amount of CO₂ that is produced by burning biodiesel from corn is equal to the amount of CO₂ fixed by corn during its growth.
B)   No. The production of fertilizer and use of machinery probably produce more CO₂ than corn plants are able to fix during their growth.
C)   Yes. Biodiesel from corn produces sulfur when it is burned, not CO₂.
D)   No. Corn actually fixes more CO₂ as it is grown than biofuel made from corn releases when it is burned.E) B) and D)
F) A) and B)

Question 6

Only animal cells carry out oxidative phosphorylation.

Accepted Answer

A) True 
 B)False

Question 7

The chemical 3-(3,4-dichloro-phenyl) -1,1-dimethylurea (DCMU)  blocks the movement of electrons at the point indicated by the arrow in the figure below. 
Which of the following would be an immediate effect of treating a chloroplast with this drug?

Accepted Answer

A)   Water molecules would be split at a faster rate than when the drug is not present.
B)   The amount of NADPH produced by the light reactions would increase.
C)   A proton gradient would not be created so ATP couldn't be made.
D)   The Calvin cycle would not occur.E) A) and D)
F) All of the above

Question 8

Oxidative phosphorylation includes an electron transport chain.

Accepted Answer

A) True 
 B)False

Question 9

NADP++ is

Accepted Answer

A)   oxidized by Photosystem I.
B)   reduced by Photosystem I.
C)   reduced by Photosystem II.
D)   oxidized by Photosystem II.E) All of the above
F) B) and D)

Question 10

During the process of photosynthesis, plants capture light energy and store it in the form of

Accepted Answer

A)   pyruvate.
B)   stroma.
C)   chemical bonds.
D)   thylakoid disks.E) B) and C)
F) C) and D)

Question 11

The first stage of the breakdown of sugar molecules for energy is

Accepted Answer

A)   glycolysis.
B)   oxidative phosphorylation.
C)   the carbon cycle.
D)   the Krebs cycle.E) C) and D)
F) A) and D)

Question 12

Energized electrons from the antenna complex are passed along to the ___________ center.

Accepted Answer

The answer of Energized electrons from the antenna complex are...

Question 13

The conversion of inorganic carbon from air into the carbon atoms found in all living organisms is known as carbon _______.

Accepted Answer

The answer of The conversion of inorganic carbon from air...

Question 14

Fermentation produces more ATP molecules than aerobic respiration does.

Accepted Answer

A) True 
 B)False

Question 15

During photosynthesis, energized electrons flow

Accepted Answer

A)   from Photosystem I to Photosystem II.
B)   from the reaction center to the antenna complex.
C)   from Photosystem II to Photosystem I.
D)   from the stroma to the intermembrane space.E) A) and B)
F) A) and C)

Question 16

The burning pain in your muscles during strenuous exercise is a result of

Accepted Answer

A)   the build up of lactic acid during fermentation.
B)   signals sent to the nervous system by O₂-starved cells.
C)   the accumulation of pyruvate in the absence of oxidative phosphorylation.
D)   the lack of ATP needed to regulate the pain receptors in your muscle cells.E) B) and C)
F) All of the above

Question 17

As an energy carrier, ATP differs from NADPH in that

Accepted Answer

A)   ATP carries less energy than NADPH.
B)   ATP transfers energy through redox reactions whereas NADPH uses phosphorylation.
C)   NADPH is involved in a larger variety of chemical reaction than ATP.
D)   NADPH is made by Photosystem I whereas ATP is made by Photosystem II.E) A) and B)
F) All of the above

Question 18

What is the importance of photosynthesis to organisms other than plants?

Accepted Answer

A)   All other organisms require oxygen for life processes.
B)   The sugars made during photosynthesis are building blocks of DNA.
C)   All cells must have chloroplasts in order to survive.
D)   Photosynthesis captures energy that other organisms access when they eat plants or organisms that eat plants.E) A) and B)
F) B) and D)

Question 19

The three stages of aerobic catabolism are

Accepted Answer

A)   photosynthesis, glycolysis, and oxidative phosphorylation.
B)   glycolysis, the Krebs cycle, and oxidative phosphorylation.
C)   glycolysis, fermentation, and the Krebs cycle.
D)   photosynthesis, the Krebs cycle, and fermentation.E) A) and B)
F) A) and C)

Question 20

Since plants are able to capture energy from the sun, why do they need to pass that energy through the chemical reactions necessary to produce ATP?

Accepted Answer

A)   ATP allows the energy to be stored for later use or transferred to other chemical reactions.
B)   Chloroplasts are unable to use the energy they capture from the sun.
C)   Producing ATP allows the plant to destroy excess energy that was captured from the sun.
D)   The mitochondria that capture the sun's energy are unable to use it for respiration.E) All of the above
F) A) and B)

Exam 8: Photosynthesis and Cellular Respiration

Only animal cells carry out oxidative phosphorylation.

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The first stage of the breakdown of sugar molecules for energy is

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Fermentation produces more ATP molecules than aerobic respiration does.

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Which of the following statements describes the function of the electron transport chain (ETC) in photosynthesis?

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The earliest atmosphere of Earth is not believed to have contained oxygen. Which cellular component would not have been useful at that time?

Correct AnswerverifiedShow Answer

The chemical 3-(3,4-dichloro-phenyl) -1,1-dimethylurea (DCMU) blocks the movement of electrons at the point indicated by the arrow in the figure below. Which of the following would be an immediate effect of treating a chloroplast with this drug?

Correct AnswerverifiedShow Answer

During the process of photosynthesis, plants capture light energy and store it in the form of

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Energized electrons from the antenna complex are passed along to the ___________ center.

Correct AnswerverifiedShow Answer

What is the importance of photosynthesis to organisms other than plants?

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Since plants are able to capture energy from the sun, why do they need to pass that energy through the chemical reactions necessary to produce ATP?

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The growth of corn as a biofuel requires a great deal of fertilizer and gas-powered machinery. When processed, corn produces relatively low amounts of biodiesel. Is biodiesel made from corn carbon neutral?

Correct AnswerverifiedShow Answer

During photosynthesis, energized electrons flow

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As an energy carrier, ATP differs from NADPH in that

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Glycolysis occurs in the _______ of a cell.

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The conversion of inorganic carbon from air into the carbon atoms found in all living organisms is known as carbon _______.

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Oxidative phosphorylation includes an electron transport chain.

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The three stages of aerobic catabolism are

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The burning pain in your muscles during strenuous exercise is a result of

Correct AnswerverifiedShow Answer

The pigments of plant cells capture primarily the wavelengths of light that are colored _____ and _____.

Correct Answerverifiedred-orange...View AnswerShow Answer

NADP++ is

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The pigments of plant cells capture primarily the wavelengths of light that are colored _ and _.

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red-orange...
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