Question 1

It is OK to say that your brain is solar powered, because

Accepted Answer

A)  mitochondria in plant cells convert solar power to the chemical power that is used to run your brain.
B)  cellular respiration is powered by sunlight.
C)  the antenna complex in chloroplasts acts like a tiny solar panel, collecting sunlight to make the sugars that you consume to run your brain.
D)  mitochondria in plant cells use solar power to split water molecules, creating the energy that runs your brain.E) A) and B)
F) A) and D)

Question 2

The energy source that makes oxidative phosphorylation possible comes from

Accepted Answer

A)  phosphate group transfers from ATP.
B)  electrons transferred from NADPH.
C)  electrons transferred from NADH.
D)  electrons removed from CO2 during its oxidation.E) B) and D)
F) B) and C)

Question 3

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) B) and D)
F) None of the above

Question 4

Most Tibetans do not compensate for the low oxygen of their environment with an increase in red blood cells; perhaps their mitochondria have evolved a less oxygen-dependent method of catabolizing sugar and producing CO₂.

Accepted Answer

A) True 
 B)False

Question 5

During the process of photosynthesis, plants capture the kinetic energy of moving photons and transform it into potential energy in the form of

Accepted Answer

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

Question 6

Several energy carriers can be found in eukaryotic cells; the most versatile, as indicated in the illustration below, is

Accepted Answer

A)  ATP.
B)  NADPH.
C)  NADH.
D)  FADH₂.E) A) and D)
F) A) and C)

Question 7

During exercise, the increase in respiration rate and heartbeat speed are driven by the need to replenish the oxygen used to support

Accepted Answer

A)  lactic acid fermentation.
B)  carbon dioxide synthesis in the lungs.
C)  oxidative phosphorylation in muscle cell mitochondria.
D)  in-the-dark reactions of photosynthesis.E) A) and B)
F) All of the above

Question 8

Glycolysis occurs in the _____ of a cell.

Accepted Answer

A)  nucleus
B)  chloroplast
C)  mitochondrion
D)  cytosolE) A) and B)
F) A) and C)

Question 9

The green pigment most commonly associated with photosynthesis is ____________________.

Accepted Answer

The answer of The green pigment most commonly associated with...

Question 10

During alcoholic fermentation, pyruvate is converted to ethanol in order to

Accepted Answer

A)  increase the efficiency of cellular respiration by producing additional molecules of ATP.
B)  release O2 as a by-product so that cellular respiration can continue.
C)  create lactic acid to stimulate muscle contraction.
D)  recycle NADH back into NAD+ so that the cell can continue glycolysis.E) C) and D)
F) B) and D)

Question 11

Fermentation produces more ATP molecules than aerobic respiration does.

Accepted Answer

A) True 
 B)False

Question 12

Acetyl CoA is a substrate of

Accepted Answer

A)  glycolysis.
B)  the Krebs cycle.
C)  the electron transport chain.
D)  the Calvin cycle.E) A) and B)
F) A) and C)

Question 13

The mitochondria of plants contain thylakoids.

Accepted Answer

A) True 
 B)False

Question 14

The outcome of the Calvin cycle is the

Accepted Answer

A)  capture of energy from sunlight.
B)  synthesis of sugars like glucose, fructose, and sucrose.
C)  production of pyruvate.
D)  breakdown of complex molecules and the subsequent release of energy.E) All of the above
F) A) and C)

Question 15

Alcohol is a by-product of fermentation by yeast.

Accepted Answer

A) True 
 B)False

Question 16

The NADH produced by the Krebs cycle donates electrons to the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 17

The process that produces ATP from sugars begins with glycolysis; when fatty acids are used the process begins with

Accepted Answer

A)  oxidative phosphorylation.
B)  the Calvin cycle.
C)  the electron transport chain.
D)  the Krebs cycle.E) C) and D)
F) A) and B)

Question 18

Cells use a variety of metabolic pathways to construct ATP, but each concludes with the same step. Which of the following describes the final step by which ADP becomes ATP?

Accepted Answer

A)  photosynthesis
B)  phosphorylation
C)  carbon fixation
D)  electron transferE) B) and C)
F) A) and C)

Question 19

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 20

The muscles of a very active organism would contain fewer mitochondria than the muscles of a less active organism.

Accepted Answer

A) True 
 B)False

Exam 9: Photosynthesis and Cellular Respiration

Acetyl CoA is a substrate of

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Alcohol is a by-product of fermentation by yeast.

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Several energy carriers can be found in eukaryotic cells; the most versatile, as indicated in the illustration below, is

Correct AnswerverifiedShow Answer

The energy source that makes oxidative phosphorylation possible comes from

Correct AnswerverifiedShow Answer

Fermentation produces more ATP molecules than aerobic respiration does.

Correct AnswerverifiedShow Answer

The muscles of a very active organism would contain fewer mitochondria than the muscles of a less active organism.

Correct AnswerverifiedShow Answer

The three stages of aerobic catabolism are

Correct AnswerverifiedShow Answer

The mitochondria of plants contain thylakoids.

Correct AnswerverifiedShow Answer

Most Tibetans do not compensate for the low oxygen of their environment with an increase in red blood cells; perhaps their mitochondria have evolved a less oxygen-dependent method of catabolizing sugar and producing CO₂.

Correct AnswerverifiedShow Answer

The green pigment most commonly associated with photosynthesis is ____________________.

Correct AnswerverifiedShow Answer

Cells use a variety of metabolic pathways to construct ATP, but each concludes with the same step. Which of the following describes the final step by which ADP becomes ATP?

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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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The outcome of the Calvin cycle is the

Correct AnswerverifiedShow Answer

During exercise, the increase in respiration rate and heartbeat speed are driven by the need to replenish the oxygen used to support

Correct AnswerverifiedShow Answer

The NADH produced by the Krebs cycle donates electrons to the electron transport chain.

Correct AnswerverifiedShow Answer

It is OK to say that your brain is solar powered, because

Correct AnswerverifiedShow Answer

Glycolysis occurs in the _____ of a cell.

Correct AnswerverifiedShow Answer

During alcoholic fermentation, pyruvate is converted to ethanol in order to

Correct AnswerverifiedShow Answer

During the process of photosynthesis, plants capture the kinetic energy of moving photons and transform it into potential energy in the form of

Correct AnswerverifiedShow Answer

The process that produces ATP from sugars begins with glycolysis; when fatty acids are used the process begins with

Correct AnswerverifiedShow Answer

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