Question 1

In prokaryotic cells the electron transport system occurs in the mitochondria.

Accepted Answer

A) True 
 B)False

Question 2

Compared to the air a person inhales,the air that they exhale has

Accepted Answer

A)   higher concentrations of both O2 and CO2 .
B)   lower concentrations of both O2 and CO2 .
C)   a lower concentration of O2 and a higher concentration of CO2 .
D)   a higher concentration of O2 and a lower concentration of CO2 .E) None of the above
F) All of the above

Question 3

Yeast produce ethanol,a toxic waste product,during fermentation.Why would yeast produce something that is toxic to themselves?

Accepted Answer

A)   to use up excess pyruvate in order to continue glycolysis
B)   to conserve oxygen for other reactions
C)   to regenerate NAD+ in order to continue glycolysis
D)   to avoid the production of lactic acid
E)   to produce NADH for energyF) A) and B)
G) B) and C)

Question 4

The main reason that cellular aerobic respiration needs to occur step by step instead of a single,big reaction is

Accepted Answer

A)   cells produce the enzymes needed for cellular respiration very slowly.
B)   too much energy would be released as heat, and destroy the cell.
C)   cells don't store enough oxygen to absorb all the energy in one release.
D)   glucose breaks down slowly, carbon by carbon, inside a cell.
E)   cells don't have enough mitochondria to catalyze the larger, single reaction.F) A) and B)
G) A) and E)

Question 5

Figuer: 
-What is the independent variable in this figure?

Accepted Answer

A)   amount of pollen collected
B)   rate of oxygen production
C)   glucose production
D)   rate of carbon dioxide production
E)   temperatureF) A) and D)
G) A) and E)

Question 6

Which of the following could be electron acceptors in anaerobic respiration?

Accepted Answer

A)   nitrate or oxygen
B)   nitrate or sulfate
C)   sulfate or oxygen
D)   All of the answer choices are correct.
E)   lactic acidF) None of the above
G) D) and E)

Question 7

The "spent" electrons from electron transport in aerobic respiration are transferred to

Accepted Answer

A)   nitrogen, reducing it to form NADH.
B)   oxygen, reducing it with with hydrogen to form water.
C)   carbon dioxide, in order to allow it to enter the Krebs cycle.
D)   sulfur, oxidizing it to form more hydrogens in the concentration gradient.
E)   hydrogen, to neutralize its charge before passing through ATP synthase.F) B) and D)
G) A) and C)

Question 8

The Krebs cycle runs

Accepted Answer

A)   six times for each glucose, because each carbon pulled from the original molecule will power the Krebs cycle.
B)   12 times for each glucose, because all of these processes are associated with the Krebs cycle
C)   three times for each glucose, to power the electron transport proteins in hydrogen transport.
D)   once for each glucose consumed, to rearrange the molecule prior to ADP production.
E)   twice for each glucose, acting on the two-carbon molecule fragments from glycolysis, carried as acetyl CoA.F) B) and C)
G) A) and E)

Question 9

An example of a poison that kills by interfering with ATP production is

Accepted Answer

A)   All of the answer choices are correct.
B)   carbon monoxide.
C)   arsenic.
D)   cyanide.
E)   rotenone.F) A) and B)
G) A) and C)

Question 10

In eukaryotic cells the electron transport system occurs in the mitochondria.

Accepted Answer

A) True 
 B)False

Question 11

Glycolysis and the Krebs cycle do not capture all of the energy in a glucose molecule because

Accepted Answer

A)   ATP easily vaporizes.
B)   energy cannot be created or destroyed.
C)   some glucose is not broken down.
D)   some energy is always lost as heat during chemical reactions.
E)   some energy remains in the atoms.F) B) and C)
G) A) and B)

Question 12

When Seymour and colleagues measured the temperature of philodendron flowers,what hypothesis were they testing?

Accepted Answer

A)   Is heat being used by Philodendron increase the rate of pollen production?
B)   Is heat being used by Philodendron to attract pollinators?
C)   Does heat increase the rate of photosynthesis by Philodendron?
D)   Does generating heat decrease the metabolism of Philodendron?
E)   Does generating heat increase the metabolism of Philodendron?F) B) and C)
G) A) and E)

Question 13

During fermentation,___ ATP can be produced per glucose,compared with ____ by aerobic respiration.

Accepted Answer

A)   36; 2
B)   30; 6
C)   6; 30
D)   2; 6
E)   2; 36F) B) and D)
G) B) and C)

Question 14

The six carbons that form glucose in your food,are effectively lost from the cell as a byproduct

Accepted Answer

A)   both at the oxidation of pyruvate to acetyl CoA, and in the Krebs cycle.
B)   during the Krebs cycle as intermediate molecules are rearranged.
C)   each time ATP synthase phosphorylates ADP.
D)   as pyruvate is oxidized to form acetyl CoA.
E)   when the glucose is initially broken apart in glycolysis.F) A) and C)
G) None of the above

Question 15

The most ancient of the energy pathways among organisms is probably

Accepted Answer

A)   aerobic respiration.
B)   photosynthesis.
C)   glycolysis.
D)   Calvin cycle.
E)   Krebs cycle.F) B) and E)
G) All of the above

Question 16

The reactants for cellular respiration are

Accepted Answer

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

Question 17

Proteins in your diet can be used as input to the cellular respiration pathways.

Accepted Answer

A) True 
 B)False

Question 18

In animal,plant,fungal,and algal cells,the primary organelle that generates molecules of ATP is the

Accepted Answer

A)   None of the answer choices are correct.
B)   mitochondrion.
C)   Golgi body.
D)   ribosome.
E)   lysosome.F) D) and E)
G) All of the above

Question 19

How can glycolysis produce ATP in the absence of oxygen and ATP synthase?

Accepted Answer

A)   by substrate level phosphorylation
B)   by ATPase linked to the mitochondrial electron transport chain
C)   by oxidative phosphorylation
D)   All of the answer choices are correct.
E)   by exciting electrons using photons of lightF) A) and E)
G) D) and E)

Question 20

In a eukaryotic cell,the electron transport system occurs in the

Accepted Answer

A)   mitochondrion.
B)   lysosome.
C)   cytoplasm.
D)   nucleus.
E)   ribosome.F) A) and B)
G) C) and E)

Exam 6: How Cells Release Energy

Figuer: -What is the independent variable in this figure?

Correct AnswerverifiedShow Answer

In a eukaryotic cell,the electron transport system occurs in the

Correct AnswerverifiedShow Answer

An example of a poison that kills by interfering with ATP production is

Correct AnswerverifiedShow Answer

In animal,plant,fungal,and algal cells,the primary organelle that generates molecules of ATP is the

Correct AnswerverifiedShow Answer

The reactants for cellular respiration are

Correct AnswerverifiedShow Answer

The most ancient of the energy pathways among organisms is probably

Correct AnswerverifiedShow Answer

The main reason that cellular aerobic respiration needs to occur step by step instead of a single,big reaction is

Correct AnswerverifiedShow Answer

In eukaryotic cells the electron transport system occurs in the mitochondria.

Correct AnswerverifiedShow Answer

The Krebs cycle runs

Correct AnswerverifiedShow Answer

How can glycolysis produce ATP in the absence of oxygen and ATP synthase?

Correct AnswerverifiedShow Answer

During fermentation,___ ATP can be produced per glucose,compared with ____ by aerobic respiration.

Correct AnswerverifiedShow Answer

Yeast produce ethanol,a toxic waste product,during fermentation.Why would yeast produce something that is toxic to themselves?

Correct AnswerverifiedShow Answer

The six carbons that form glucose in your food,are effectively lost from the cell as a byproduct

Correct AnswerverifiedShow Answer

Glycolysis and the Krebs cycle do not capture all of the energy in a glucose molecule because

Correct AnswerverifiedShow Answer

Proteins in your diet can be used as input to the cellular respiration pathways.

Correct AnswerverifiedShow Answer

In prokaryotic cells the electron transport system occurs in the mitochondria.

Correct AnswerverifiedShow Answer

The "spent" electrons from electron transport in aerobic respiration are transferred to

Correct AnswerverifiedShow Answer

Which of the following could be electron acceptors in anaerobic respiration?

Correct AnswerverifiedShow Answer

When Seymour and colleagues measured the temperature of philodendron flowers,what hypothesis were they testing?

Correct AnswerverifiedShow Answer

Compared to the air a person inhales,the air that they exhale has

Correct AnswerverifiedShow Answer

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During fermentation,_ ATP can be produced per glucose,compared with __ by aerobic respiration.

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