Question 1

The fermentation process in vertebrate muscle cells produces

Accepted Answer

A)   lactic acid.
B)   12 moles of ATP.
C)   pyruvic acid.
D)   an excessive amount of energy.
E)   ethanol.F) A) and C)
G) A) and B)

Question 2

Which list places the molecules, from left to right, from most oxidized to least oxidized?

Accepted Answer

A)   CO2 > CH2O > HCOOH > CH4
B)   HCOOH > CH4 > CH3OH > CO2
C)   CO2 > CHOOH > CH3OH > CH4
D)   CH4 > CH3OH > CHOOH > CO2
E)   CH2O > CO2 > CH3OH > CH4F) B) and D)
G) B) and C)

Question 3

Mouse mitochondria were isolated and incubated with two different compounds to see whether they affected FADH2 oxidation, NADH oxidation, or ATP formation.A control sample was run in the absence of either compound.The results are summarized in the table as "yes" if a process was observed and "no" if a process was not observed. 2 oxidation, NADH oxidation, or ATP formation.A control sample was run in the absence of either compound.The results are summarized in the table as  yes  if a process was observed and  no  if a process was not observed.   Which statement is consistent with these data? A)  Compound Z inhibits a component of the electron transport chain, while compound A inhibits ATP synthase. B)  Compound A inhibits a component of the electron transport chain, while compound Z inhibits ATP synthase. C)  Compound Z inhibits the first component of the electron transport chain, while compound A inhibits a later component of the chain. D)  Compound A inhibits the first component of the electron transport chain, while compound Z inhibits a later component of the chain. E)  Compound A and compound Z both directly interfere with the final transfer of electrons to oxygen." class="answers-bank-image d-inline" rel="preload" > Which statement is consistent with these data?

Accepted Answer

A)   Compound Z inhibits a component of the electron transport chain, while compound A inhibits ATP synthase.
B)   Compound A inhibits a component of the electron transport chain, while compound Z inhibits ATP synthase.
C)   Compound Z inhibits the first component of the electron transport chain, while compound A inhibits a later component of the chain.
D)   Compound A inhibits the first component of the electron transport chain, while compound Z inhibits a later component of the chain.
E)   Compound A and compound Z both directly interfere with the final transfer of electrons to oxygen.F) A) and E)
G) B) and E)

Question 4

A student wants to develop a demonstration to explain the energy changes taking place as electrons are transferred along the respiratory chain.Which everyday objects could he use to accomplish his goal?

Accepted Answer

A)   A bat striking a ball
B)   A ball rolling down a staircase
C)   A book falling from a table to the floor
D)   A hot plate boiling water in a pot
E)   An ice cube melting in a bowlF) A) and E)
G) A) and D)

Question 5

Refer to the figure below. BH and NAD+  NADH B)  AH A and B BH C)  AH A and NAD+  NADH D)  AH A and NADH  NAD+ E)  B BH and NADH  NAD+" class="answers-bank-image d-inline" rel="preload" > Which half-reactions represent a change from more stored free energy to less stored free energy?

Accepted Answer

A)   B BH and NAD+  NADH
B)   AH A and B BH
C)   AH A and NAD+  NADH
D)   AH A and NADH  NAD+
E)   B BH and NADH  NAD+F) All of the above
G) C) and E)

Question 6

Refer to the table below.  A student created this table as a study guide for learning the similarities and differences between lactic acid and alcoholic fermentation.Which statement best evaluates the accuracy of the student's efforts?

Accepted Answer

A)   The table is accurate as written.
B)   Lactic acid fermentation has different inputs than alcoholic fermentation.
C)   NADH is a net output for both types of fermentation and should be listed.
D)   Alcoholic fermentation results in less ATP production than lactic acid fermentation.
E)   Both types of fermentation differ by two steps.F) A) and B)
G) All of the above

Question 7

In the citric acid cycle, isocitrate dehydrogenase is regulated in part by the supply and demand of downstream products of cellular respiration and metabolism.Which product acts as an allosteric inhibitor of isocitrate dehydrogenase activity?

Accepted Answer

A)   ADP
B)   Acetyl CoA
C)   NADH
D)   Isocitrate
E)   -KetoglutarateF) A) and C)
G) A) and D)

Question 8

Electron transport within NADH-Q reductase, cytochrome reductase, and cytochrome oxidase can be coupled to proton transport from the mitochondrial matrix to the space between the inner and outer mitochondrial membranes.This is because those protein complexes

Accepted Answer

A)   are in the mitochondrial matrix.
B)   span the inner mitochondrial membrane.
C)   are in the space between the inner and outer mitochondrial membranes.
D)   remain in the cytoplasm.
E)   loosely attach to the inner mitochondrial membrane.F) A) and E)
G) A) and B)

Question 9

The oxidation of acetyl CoA to CO2 takes place in the _______ cycle.

Accepted Answer

Question 10

Which is required for wine production?

Accepted Answer

A)   Plant cells devoid of sugar
B)   An aerobic environment
C)   Purified chloroplasts only
D)   Yeast and a source of glucose
E)   Lactic acid fermentation from glucoseF) B) and E)
G) A) and E)

Question 11

Refer to the table below.  The complete oxidation of 1 mole of glucose and the complete oxidation of 1 mole of alanine give the same products in different quantities, as shown in the table.Given this information, it can be stated that

Accepted Answer

A)   alanine produces 6 more ATP per carbon oxidized than glucose.
B)   glucose produces 4 more ATP per carbon oxidized than alanine.
C)   alanine produces 2 more ATP per carbon oxidized than glucose.
D)   glucose produces 1 more ATP per carbon oxidized than alanine.
E)   alanine produces approximately the same ATP per carbon oxidized as glucose.F) D) and E)
G) A) and B)

Question 12

The fate of acetyl CoA differs according to how much ATP is present in the cell.Explain what happens to acetyl CoA when ATP is limited, and compare this to what happens when ATP is abundant.

Accepted Answer

If ATP is limited, acetyl CoA enters the...

Question 13

Choose the phrase that does not correctly complete this sentence: Oxidative phosphorylation is a process

Accepted Answer

A)   that requires a membrane that is permeable to protons.
B)   in which ATP is formed as a result of the transfer of electrons to O2.
C)   that occurs in the mitochondria in eukaryotes and in the plasma membrane in prokaryotes.
D)   that involves the respiratory chain and ATP synthases.
E)   that requires the presence of ADP and Pi.F) B) and E)
G) A) and E)

Question 14

Energy production occurs in different locations in prokaryotic and eukaryotic cells.Which statement is true for prokaryotes?

Accepted Answer

A)   The conversion of glucose to pyruvate occurs on the cell membrane.
B)   The conversion of pyruvate to lactate occurs on the cell membrane.
C)   The conversion of pyruvate to CO2 and H2O occurs in the mitochondria.
D)   The respiratory chain enzymes are found on the cell membrane.
E)   The citric acid cycle enzymes are found in the mitochondria.F) B) and D)
G) All of the above

Question 15

The compound citrate is generated as part of the citric acid cycle.Citrate activates the enzyme fatty acid synthase to shuttle excess carbon into fatty acids and inhibits the enzyme phosphofructokinase to slow glycolysis.Both of these processes involve binding of citrate to the enzymes, where it exerts its effects through _______ regulation.

Accepted Answer

The answer of The compound citrate is generated as part...

Question 16

Most ATP produced in aerobic organisms is made

Accepted Answer

A)   by glycolysis.
B)   in the citric acid cycle.
C)   using ATP synthase.
D)   from photosynthesis.
E)   by burning fat.F) None of the above
G) D) and E)

Question 17

Metabolic pathways are

Accepted Answer

A)   small sets of chemical reactions that are always taking place in every cell.
B)   large sets of interconnected chemical transformational steps, each with a specific enzyme.
C)   ways of creating energy for a cell.
D)   resistant to inhibitors and activators.
E)   not regulated.F) C) and D)
G) D) and E)

Question 18

Proteins are built from carbons that come directly from

Accepted Answer

A)   glycolysis.
B)   pyruvate oxidation.
C)   acetyl CoA.
D)   the citric acid cycle.
E)   electron transport.F) A) and D)
G) A) and B)

Question 19

How many reaction steps are involved in the citric acid cycle?

Accepted Answer

A)   One
B)   Three
C)   Five
D)   Eight
E)   TenF) A) and E)
G) B) and C)

Question 20

Which statement regarding glycolysis is true?

Accepted Answer

A)   Two molecules of glucose are catabolized to form two molecules of pyruvate.
B)   The first two steps are endergonic.
C)   Two ATP molecules are required in the first three steps per glucose molecule.
D)   ATP is not formed.
E)   NADH is not formed.F) B) and E)
G) B) and D)

Exam 9: Pathways That Harvest Chemical Energy

Metabolic pathways are

Correct Answer
verified

Which is required for wine production?

Correct Answer
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Most ATP produced in aerobic organisms is made

Correct Answer
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Which statement regarding glycolysis is true?

Correct Answer
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Which list places the molecules, from left to right, from most oxidized to least oxidized?

Correct Answer
verified

Refer to the table below. A student created this table as a study guide for learning the similarities and differences between lactic acid and alcoholic fermentation.Which statement best evaluates the accuracy of the student's efforts?

Correct Answer
verified

Refer to the table below. The complete oxidation of 1 mole of glucose and the complete oxidation of 1 mole of alanine give the same products in different quantities, as shown in the table.Given this information, it can be stated that

Correct Answer
verified

Refer to the figure below. Which half-reactions represent a change from more stored free energy to less stored free energy?

Correct Answer
verified

The fermentation process in vertebrate muscle cells produces

Correct Answer
verified

Choose the phrase that does not correctly complete this sentence: Oxidative phosphorylation is a process

Correct Answer
verified

The oxidation of acetyl CoA to CO₂ takes place in the _______ cycle.

Correct Answer
verified

Correct Answer
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A student wants to develop a demonstration to explain the energy changes taking place as electrons are transferred along the respiratory chain.Which everyday objects could he use to accomplish his goal?

Correct Answer
verified

The fate of acetyl CoA differs according to how much ATP is present in the cell.Explain what happens to acetyl CoA when ATP is limited, and compare this to what happens when ATP is abundant.

Correct Answer
verified
If ATP is limited, acetyl CoA enters the...
View Answer

How many reaction steps are involved in the citric acid cycle?

Correct Answer
verified

In the citric acid cycle, isocitrate dehydrogenase is regulated in part by the supply and demand of downstream products of cellular respiration and metabolism.Which product acts as an allosteric inhibitor of isocitrate dehydrogenase activity?

Correct Answer
verified

Energy production occurs in different locations in prokaryotic and eukaryotic cells.Which statement is true for prokaryotes?

Correct Answer
verified

Proteins are built from carbons that come directly from

Correct Answer
verified

Electron transport within NADH-Q reductase, cytochrome reductase, and cytochrome oxidase can be coupled to proton transport from the mitochondrial matrix to the space between the inner and outer mitochondrial membranes.This is because those protein complexes

Correct Answer
verified

Exam 9: Pathways That Harvest Chemical Energy

Metabolic pathways are

Correct AnswerverifiedShow Answer

Which is required for wine production?

Correct AnswerverifiedShow Answer

Most ATP produced in aerobic organisms is made

Correct AnswerverifiedShow Answer

Which statement regarding glycolysis is true?

Correct AnswerverifiedShow Answer

Which list places the molecules, from left to right, from most oxidized to least oxidized?

Correct AnswerverifiedShow Answer

Refer to the table below. A student created this table as a study guide for learning the similarities and differences between lactic acid and alcoholic fermentation.Which statement best evaluates the accuracy of the student's efforts?

Correct AnswerverifiedShow Answer

Refer to the table below. The complete oxidation of 1 mole of glucose and the complete oxidation of 1 mole of alanine give the same products in different quantities, as shown in the table.Given this information, it can be stated that

Correct AnswerverifiedShow Answer

Refer to the figure below. Which half-reactions represent a change from more stored free energy to less stored free energy?

Correct AnswerverifiedShow Answer

The fermentation process in vertebrate muscle cells produces

Correct AnswerverifiedShow Answer

Choose the phrase that does not correctly complete this sentence: Oxidative phosphorylation is a process

Correct AnswerverifiedShow Answer

The oxidation of acetyl CoA to CO2 takes place in the _______ cycle.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A student wants to develop a demonstration to explain the energy changes taking place as electrons are transferred along the respiratory chain.Which everyday objects could he use to accomplish his goal?

Correct AnswerverifiedShow Answer

The fate of acetyl CoA differs according to how much ATP is present in the cell.Explain what happens to acetyl CoA when ATP is limited, and compare this to what happens when ATP is abundant.

Correct AnswerverifiedIf ATP is limited, acetyl CoA enters the...View AnswerShow Answer

How many reaction steps are involved in the citric acid cycle?

Correct AnswerverifiedShow Answer

In the citric acid cycle, isocitrate dehydrogenase is regulated in part by the supply and demand of downstream products of cellular respiration and metabolism.Which product acts as an allosteric inhibitor of isocitrate dehydrogenase activity?

Correct AnswerverifiedShow Answer

Energy production occurs in different locations in prokaryotic and eukaryotic cells.Which statement is true for prokaryotes?

Correct AnswerverifiedShow Answer

Proteins are built from carbons that come directly from

Correct AnswerverifiedShow Answer

Electron transport within NADH-Q reductase, cytochrome reductase, and cytochrome oxidase can be coupled to proton transport from the mitochondrial matrix to the space between the inner and outer mitochondrial membranes.This is because those protein complexes

Correct AnswerverifiedShow Answer

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The oxidation of acetyl CoA to CO₂ takes place in the _______ cycle.

Correct Answer
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If ATP is limited, acetyl CoA enters the...
View Answer

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