Question 1

Of the following, which process will not denature a protein?

Accepted Answer

A)   heating to temperatures above 100 C
B)   addition of strong acids or strong bases
C)   phosphorylation
D)   addition of distilled waterE) A) and B)
F) A) and C)

Question 2

Which of the following substrates are required to run cellular respiration?

Accepted Answer

A)   glucose and oxygen
B)   glucose and carbon dioxide
C)   sunlight and oxygen
D)   energy and glucoseE) B) and C)
F) None of the above

Question 3

Study the graph shown here. The letter 'B ' depicts the _____, while 'C' depicts ________.

Accepted Answer

A)   energy of activation; energy of products
B)   energy of products; energy of activation
C)   energy of reactants; energy of products
D)   reactant concentration; activation energyE) A) and B)
F) A) and C)

Question 4

Which best describes the second law of thermodynamics?

Accepted Answer

A)   Energy is not created nor destroyed, but it can change into matter.
B)   Energy is not created nor destroyed, but it can change from one energy form to another.
C)   Energy can be created from matter or used to produce matter.
D)   Some useful energy is lost as heat whenever an energy transfer occurs.
E)   Energy transfers are always 100% efficient in changing energy from one useful form to another.F) A) and E)
G) B) and E)

Question 5

Analyze this figure to categorize the chemical reaction as a synthesis reaction or a degradation reaction. Cite evidence to support your answer.

Accepted Answer

The is a synthesis reaction. I...

Question 6

Astrophysicists explain that eventually the sun will swell to become a red giant, engulf the earth and "burn out" with all forms of energy dispersing in a final "heat death." Compared with conditions today, the entropy of the universe then will

Accepted Answer

A)   have increased greatly.
B)   have decreased greatly.
C)   remain the same because energy cannot be created or destroyed. Compared with conditions today, the entropy of the universe then will have greatly increased.D) B) and C)
E) None of the above

Question 7

What are the end products of photosynthesis?

Accepted Answer

A)   glucose and oxygen
B)   glucose and ATP
C)   carbon dioxide and energy
D)   carbon dioxide and waterE) A) and D)
F) C) and D)

Question 8

If a change in pH alters an allosteric site where an inhibitor binds, but doesn't change the active site for the intended substrate, it would be possible for an enzymatically controlled reaction to occur as normal.

Accepted Answer

A) True 
 B)False

Question 9

Coupling occurs when the energy released by an exergonic reaction is

Accepted Answer

A)   used to drive another exergonic reaction.
B)   used to drive an endergonic reaction.
C)   lost as nonusable heat to the environment.
D)   used to decrease the entropy of the universe.
E)   All of the choices are correct.F) B) and D)
G) A) and C) B

Question 10

In order to roll a rock down a hillside, you must first push it up out of the hole in which it rests. Pushing the rock is analogous to the energy of activation of a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 11

Which form of energy is NOT correctly associated with the related example?

Accepted Answer

A)   kinetic energy: fat molecules
B)   kinetic energy: movement of muscles
C)   chemical energy: glucose
D)   potential energy: water held behind a dam
E)   potential energy: ATPF) A) and E)
G) B) and D)

Question 12

If an organism runs photosynthesis for its main form of energy, the removal of what substrate would limit it's growth?

Accepted Answer

A)   6H2O
B)   C6H12O6
C)   6O2
D)   6CO-E) All of the above
F) A) and B)

Question 13

An enzyme is a globular protein that inhibits the formation of chemical bonds within the enzyme's substrate(s) causing the rate of the reaction to slow down.

Accepted Answer

A) True 
 B)False

Question 14

ATP is considered a high-energy compound because under cellular conditions, 7.3 kcal per mole of energy is released when a bond is broken between

Accepted Answer

A)   the base adenine and the sugar ribose.
B)   the adenosine and the phosphate groups.
C)   the base adenine and the phosphate groups.
D)   the adenosine diphosphate and the third phosphate.
E)   All of the bonds release energy as ATP is completely broken down.F) A) and B)
G) B) and E)

Question 15

In living substances, the hydrolysis of ATP to ADP and P is virtually the sole supply of energy. However, ATP does not release this energy spontaneously but only in cell machinery where some work is being carried out. In such cases, special enzymes (ATPases) are necessary for the hydrolysis of ATP. How does the universality of ATP and the diversity of enzyme systems relate to the unity and diversity of life through evolution?

Accepted Answer

Answers may vary. At a glance, life form...

Question 16

Enzyme inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Accepted Answer

A) True 
 B)False  True

Question 17

Energy coupling of endergonic and exergonic reactions within cells

Accepted Answer

A)   permits biological reactions to proceed at temperatures consistent with life.
B)   uses heat released by one reaction to fuel the other reaction.
C)   utilizes ATP to carry energy between the exergonic and endergonic reactions.
D)   All of the choices are correct.E) A) and B)
F) All of the above

Question 18

If there are twelve different intermediate products produced in the stages of a metabolic pathway within a cell, we can expect that there

Accepted Answer

A)   is one enzyme that carries this process through to the end product.
B)   is one enzyme for degradation and another enzyme for synthesis.
C)   may not be any enzymes involved if this is a natural cell product.
D)   must be twelve different raw materials combined in the cell by one enzyme.
E)   are about twelve enzymes, at least one responsible for each step in the metabolic pathway.F) C) and E)
G) B) and C)

Question 19

An automobile engine is about 20 - 30% efficient in converting chemical energy to mechanical energy. Cells are about 39% efficient in the transformation of glucose to ATP. The rest of the energy is lost as heat. This is illustrative of the

Accepted Answer

A)   First Law of Thermodynamics.
B)   Second Law of Thermodynamics.
C)   Third Law of Thermodynamics.
D)   the Cell Theory.E) A) and C)
F) A) and B) B

Question 20

Which of these statements is NOT a consequence of the second law of thermodynamics?

Accepted Answer

A)   While the total amount of energy is unchanged, the energy lost as heat is no longer useful to the cell in doing work.
B)   Reactions that occur spontaneously are those that increase the amount of useful energy in a system.
C)   The amount of disorder in the universe is always increasing.
D)   To maintain organization of a cell, a continual input of energy is required.E) A) and D)
F) A) and C)

Exam 6: Metabolism: Energy and Enzymes

Of the following, which process will not denature a protein?

Correct Answer
verified

Which of the following substrates are required to run cellular respiration?

Correct Answer
verified

Study the graph shown here. The letter 'B ' depicts the _, while 'C' depicts ____.

Correct Answer
verified

Which best describes the second law of thermodynamics?

Correct Answer
verified

Analyze this figure to categorize the chemical reaction as a synthesis reaction or a degradation reaction. Cite evidence to support your answer.

Correct Answer
verified
The is a synthesis reaction. I...
View Answer

Astrophysicists explain that eventually the sun will swell to become a red giant, engulf the earth and "burn out" with all forms of energy dispersing in a final "heat death." Compared with conditions today, the entropy of the universe then will

Correct Answer
verified

What are the end products of photosynthesis?

Correct Answer
verified

If a change in pH alters an allosteric site where an inhibitor binds, but doesn't change the active site for the intended substrate, it would be possible for an enzymatically controlled reaction to occur as normal.

Correct Answer
verified

Coupling occurs when the energy released by an exergonic reaction is

Correct Answer
verified
B

In order to roll a rock down a hillside, you must first push it up out of the hole in which it rests. Pushing the rock is analogous to the energy of activation of a chemical reaction.

Correct Answer
verified

Which form of energy is NOT correctly associated with the related example?

Correct Answer
verified

If an organism runs photosynthesis for its main form of energy, the removal of what substrate would limit it's growth?

Correct Answer
verified

An enzyme is a globular protein that inhibits the formation of chemical bonds within the enzyme's substrate(s) causing the rate of the reaction to slow down.

Correct Answer
verified

ATP is considered a high-energy compound because under cellular conditions, 7.3 kcal per mole of energy is released when a bond is broken between

Correct Answer
verified

Correct Answer
verified
Answers may vary. At a glance, life form...
View Answer

Enzyme inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Correct Answer
verified
True

Energy coupling of endergonic and exergonic reactions within cells

Correct Answer
verified

If there are twelve different intermediate products produced in the stages of a metabolic pathway within a cell, we can expect that there

Correct Answer
verified

An automobile engine is about 20 - 30% efficient in converting chemical energy to mechanical energy. Cells are about 39% efficient in the transformation of glucose to ATP. The rest of the energy is lost as heat. This is illustrative of the

Correct Answer
verified
B

Which of these statements is NOT a consequence of the second law of thermodynamics?

Correct Answer
verified

Exam 6: Metabolism: Energy and Enzymes

Of the following, which process will not denature a protein?

Correct AnswerverifiedShow Answer

Which of the following substrates are required to run cellular respiration?

Correct AnswerverifiedShow Answer

Study the graph shown here. The letter 'B ' depicts the _____, while 'C' depicts ________.

Correct AnswerverifiedShow Answer

Which best describes the second law of thermodynamics?

Correct AnswerverifiedShow Answer

Analyze this figure to categorize the chemical reaction as a synthesis reaction or a degradation reaction. Cite evidence to support your answer.

Correct AnswerverifiedThe is a synthesis reaction. I...View AnswerShow Answer

Astrophysicists explain that eventually the sun will swell to become a red giant, engulf the earth and "burn out" with all forms of energy dispersing in a final "heat death." Compared with conditions today, the entropy of the universe then will

Correct AnswerverifiedShow Answer

What are the end products of photosynthesis?

Correct AnswerverifiedShow Answer

If a change in pH alters an allosteric site where an inhibitor binds, but doesn't change the active site for the intended substrate, it would be possible for an enzymatically controlled reaction to occur as normal.

Correct AnswerverifiedShow Answer

Coupling occurs when the energy released by an exergonic reaction is

Correct AnswerverifiedB

In order to roll a rock down a hillside, you must first push it up out of the hole in which it rests. Pushing the rock is analogous to the energy of activation of a chemical reaction.

Correct AnswerverifiedShow Answer

Which form of energy is NOT correctly associated with the related example?

Correct AnswerverifiedShow Answer

If an organism runs photosynthesis for its main form of energy, the removal of what substrate would limit it's growth?

Correct AnswerverifiedShow Answer

An enzyme is a globular protein that inhibits the formation of chemical bonds within the enzyme's substrate(s) causing the rate of the reaction to slow down.

Correct AnswerverifiedShow Answer

ATP is considered a high-energy compound because under cellular conditions, 7.3 kcal per mole of energy is released when a bond is broken between

Correct AnswerverifiedShow Answer

Correct AnswerverifiedAnswers may vary. At a glance, life form...View AnswerShow Answer

Enzyme inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

Correct AnswerverifiedTrue

Energy coupling of endergonic and exergonic reactions within cells

Correct AnswerverifiedShow Answer

If there are twelve different intermediate products produced in the stages of a metabolic pathway within a cell, we can expect that there

Correct AnswerverifiedShow Answer

An automobile engine is about 20 - 30% efficient in converting chemical energy to mechanical energy. Cells are about 39% efficient in the transformation of glucose to ATP. The rest of the energy is lost as heat. This is illustrative of the

Correct AnswerverifiedB

Which of these statements is NOT a consequence of the second law of thermodynamics?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Study the graph shown here. The letter 'B ' depicts the _, while 'C' depicts ____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The is a synthesis reaction. I...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers may vary. At a glance, life form...
View Answer

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified