Ch08 Test File-Energy, Enzymes, and Metabolism.
Test File
to accompany
Life: The Science of Biology, Ninth Edition
Sadava • Hillis • Heller • Berenbaum
Chapter 8: Energy, Enzymes, and Metabolism
TEST FILE QUESTIONS
(By Catherine Ueckert)
Multiple Choice
1. Lactose intolerance is due to the
a. inability to hydrolyze polysaccharides.
b.body’s ability to digest lactose but inability to absorb the resulting products.
c. gaseous side products produced in the small intestine.
d.inability to produce the enzyme lactase.
e. inability to oxidate luciferase.
Answer: d
Textbook Reference: 8.0 Lactase deficiency, p. 148
Bloom’s Category: 2. Understanding
2. Water held back by a dam represents what kind of energy?
a. Hydroelectric
b.Irrigation
c. Potential
d.Kinetic
e. At times, all of the above
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 149
Bloom’s Category: 2. Understanding
3. Which of the following represents potential energy?
a. Chemical bonds
b.Concentration gradient
c. Electric charge imbalance
d.Both a and b
e. All of the above
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 149
Bloom’s Category: 2. Understanding
,Ch08 Test File-Energy, Enzymes, and Metabolism.
4. What can never be created or destroyed?
a. Entropy
b.Energy
c. Free energy only
d.Thermal energy only
e. Potential energy only
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? pp. 149–150
Bloom’s Category: 1. Remembering
5. The sum total of all the chemical reactions in a living structure is called its
a. energetics.
b.activity.
c. digestive power.
d.entropy.
e. metabolism.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 1. Remembering
6. How does the second law of thermodynamics apply to organisms?
a. As energy transformations occur, free energy increases and unusable
energy decreases.
b.To maintain order, life requires a constant input of energy.
c. The potential energy of ATP is converted to kinetic energy such as
muscle contractions.
d.Reactions occur only with an input of energy.
e. It does not apply to organisms; the complexity of organisms contradicts the
second law.
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 2. Understanding
7. During photosynthesis, plants use light energy to synthesize glucose from carbon
dioxide. However, plants do not use up energy during photosynthesis; they
merely convert it from light energy to chemical energy. This process is an
illustration of
a. increasing entropy.
b.chemical equilibrium.
c. the first law of thermodynamics.
d.the second law of thermodynamics.
e. a spontaneous reaction.
Answer: c
,Ch08 Test File-Energy, Enzymes, and Metabolism.
8. The first law of thermodynamics states that the total energy in the universe is
a. decreasing.
b.increasing.
c. constant.
d.being converted to free energy.
e. being converted to matter.
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 2. Understanding
9. In any system, the total energy includes usable and unusable energy. The
unusable energy is a measure of the disorder of the system and is referred to as
a. free energy.
b.entropy.
c. enthalpy.
d.thermodynamics.
e. equilibrium.
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 1. Remembering
10. A change in free energy is related to a change in
a. temperature.
b.entropy.
c. pressure.
d.Both a and b
e. All of the above
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
11. If ΔG of a chemical reaction is negative and the change in entropy is positive, you
can conclude that the reaction
a. requires energy.
b.is endergonic.
c. is exergonic.
d.will not reach equilibrium.
e. decreases the disorder in the system.
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
, Ch08 Test File-Energy, Enzymes, and Metabolism.
12. A readily reversible reaction, in which reactants and products have almost the same
free energies, is indicated by a
a. slightly negative ΔG.
b.change in free energy.
c. negative ΔG.
d.ΔG near zero.
e. large positive ΔG.
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
13. The standard free energy change for the hydrolysis of ATP to ADP + Pi is –
7.3 kcal/mol. From this information, one can conclude that the
a. reaction will never reach equilibrium.
b.free energy of ADP and phosphate is higher than the free energy of ATP.
c. reaction requires energy.
d.reaction is endergonic.
e. reaction is exergonic.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
Bloom’s Category: 2. Understanding
14. Which of the following statements about the exergonic hydrolysis of maltose
to glucose is true?
a. The reaction requires the input of free energy.
b.The free energy of glucose is larger than the free energy of maltose.
c. The reaction is not spontaneous.
d.The reaction releases free energy.
e. At equilibrium, the concentration of maltose is higher than the concentration of
glucose.
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
Bloom’s Category: 4. Analyzing
15. Chemical equilibrium
a. is a dynamic state.
b.represents a state of negative energy change.
c. represents a state of positive energy change.
d.cannot exist in nature.
e. is a state in which ΔG = 0.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
Test File
to accompany
Life: The Science of Biology, Ninth Edition
Sadava • Hillis • Heller • Berenbaum
Chapter 8: Energy, Enzymes, and Metabolism
TEST FILE QUESTIONS
(By Catherine Ueckert)
Multiple Choice
1. Lactose intolerance is due to the
a. inability to hydrolyze polysaccharides.
b.body’s ability to digest lactose but inability to absorb the resulting products.
c. gaseous side products produced in the small intestine.
d.inability to produce the enzyme lactase.
e. inability to oxidate luciferase.
Answer: d
Textbook Reference: 8.0 Lactase deficiency, p. 148
Bloom’s Category: 2. Understanding
2. Water held back by a dam represents what kind of energy?
a. Hydroelectric
b.Irrigation
c. Potential
d.Kinetic
e. At times, all of the above
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 149
Bloom’s Category: 2. Understanding
3. Which of the following represents potential energy?
a. Chemical bonds
b.Concentration gradient
c. Electric charge imbalance
d.Both a and b
e. All of the above
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 149
Bloom’s Category: 2. Understanding
,Ch08 Test File-Energy, Enzymes, and Metabolism.
4. What can never be created or destroyed?
a. Entropy
b.Energy
c. Free energy only
d.Thermal energy only
e. Potential energy only
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? pp. 149–150
Bloom’s Category: 1. Remembering
5. The sum total of all the chemical reactions in a living structure is called its
a. energetics.
b.activity.
c. digestive power.
d.entropy.
e. metabolism.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 1. Remembering
6. How does the second law of thermodynamics apply to organisms?
a. As energy transformations occur, free energy increases and unusable
energy decreases.
b.To maintain order, life requires a constant input of energy.
c. The potential energy of ATP is converted to kinetic energy such as
muscle contractions.
d.Reactions occur only with an input of energy.
e. It does not apply to organisms; the complexity of organisms contradicts the
second law.
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 2. Understanding
7. During photosynthesis, plants use light energy to synthesize glucose from carbon
dioxide. However, plants do not use up energy during photosynthesis; they
merely convert it from light energy to chemical energy. This process is an
illustration of
a. increasing entropy.
b.chemical equilibrium.
c. the first law of thermodynamics.
d.the second law of thermodynamics.
e. a spontaneous reaction.
Answer: c
,Ch08 Test File-Energy, Enzymes, and Metabolism.
8. The first law of thermodynamics states that the total energy in the universe is
a. decreasing.
b.increasing.
c. constant.
d.being converted to free energy.
e. being converted to matter.
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 2. Understanding
9. In any system, the total energy includes usable and unusable energy. The
unusable energy is a measure of the disorder of the system and is referred to as
a. free energy.
b.entropy.
c. enthalpy.
d.thermodynamics.
e. equilibrium.
Answer: b
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 150
Bloom’s Category: 1. Remembering
10. A change in free energy is related to a change in
a. temperature.
b.entropy.
c. pressure.
d.Both a and b
e. All of the above
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
11. If ΔG of a chemical reaction is negative and the change in entropy is positive, you
can conclude that the reaction
a. requires energy.
b.is endergonic.
c. is exergonic.
d.will not reach equilibrium.
e. decreases the disorder in the system.
Answer: c
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
, Ch08 Test File-Energy, Enzymes, and Metabolism.
12. A readily reversible reaction, in which reactants and products have almost the same
free energies, is indicated by a
a. slightly negative ΔG.
b.change in free energy.
c. negative ΔG.
d.ΔG near zero.
e. large positive ΔG.
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 151
Bloom’s Category: 2. Understanding
13. The standard free energy change for the hydrolysis of ATP to ADP + Pi is –
7.3 kcal/mol. From this information, one can conclude that the
a. reaction will never reach equilibrium.
b.free energy of ADP and phosphate is higher than the free energy of ATP.
c. reaction requires energy.
d.reaction is endergonic.
e. reaction is exergonic.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
Bloom’s Category: 2. Understanding
14. Which of the following statements about the exergonic hydrolysis of maltose
to glucose is true?
a. The reaction requires the input of free energy.
b.The free energy of glucose is larger than the free energy of maltose.
c. The reaction is not spontaneous.
d.The reaction releases free energy.
e. At equilibrium, the concentration of maltose is higher than the concentration of
glucose.
Answer: d
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
Bloom’s Category: 4. Analyzing
15. Chemical equilibrium
a. is a dynamic state.
b.represents a state of negative energy change.
c. represents a state of positive energy change.
d.cannot exist in nature.
e. is a state in which ΔG = 0.
Answer: e
Textbook Reference: 8.1 What Physical Principles Underlie Biological Energy
Transformations? p. 152
