, TESTBANK FOR Nutrition for Sport and Exercise 6th Edition Doyle
Important Notes
The file includes the complete test bank, organized chapter by chapter.
A sample of selected pages has been provided for preview.
All available appendices and Excel files (if included in the original resources) are
provided.
We continuously update our files to ensure you receive the latest and most accurate
editions.
New editions are added regularly – stay connected for updates!
⚠️Note on Answer Keys: If the answer key is not included within the chapter
questions, you will find the complete answers and solutions at the end of each
chapter.
✅ Why Buy From Us?
📚 Complete & organized chapter-by-chapter – no missing content, no guessing.
⚡ Instant digital delivery – get your file the moment you pay, no waiting.
📅 Always up to date – we track new editions so you always get the latest version.
💬 Friendly support – real humans ready to help, anytime you need us.
🔒 Safe & secure – thousands of satisfied students trust us every semester.
🛡️Our Guarantees
💰 Money-Back Guarantee: Not satisfied? We offer a full refund – no questions asked.
🔄 Wrong File? No Problem: Contact us and we will replace it immediately with the
correct version, free of charge.
⏰ 24/7 Support: We are always here – reach out anytime and expect a fast response.
Contact Email:
,Chapter 02 - Defining and Measuring Energy
1. What is the scientific definition of energy?
a. The ability to perform work
b. The capacity to generate heat
c. The force required for movement
d. The power needed for metabolism
ANSWER: a
RATIONALE: Energy is scientifically defined as the ability to perform work, which encompasses
all forms of energy conversion and utilization in biological systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:21 AM
DATE MODIFIED: 4/9/2026 12:48 AM
2. What does the First Law of Thermodynamics state about energy in biological systems?
a. Energy can be created from nothing in living organisms.
b. Energy is neither created nor destroyed but can be converted from one form to another.
c. Energy always decreases when transferred between systems.
d. Energy cannot be transferred between different biological processes.
ANSWER: b
RATIONALE: The First Law of Thermodynamics, also known as the law of Conservation of
Energy, establishes that energy cannot be created or destroyed, only converted
between different forms in biological systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:22 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 1
,Chapter 02 - Defining and Measuring Energy
3. What is bioenergetics?
a. The study of energy storage in biological tissues
b. The process of converting chemical energy stored in food into biologically useful forms of energy
c. The measurement of energy expenditure during physical activity
d. The analysis of energy requirements for different metabolic processes
ANSWER: b
RATIONALE: Bioenergetics specifically refers to the process by which chemical energy from
food is converted into forms of energy that can be used by biological systems for
various functions.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:23 AM
DATE MODIFIED: 4/9/2026 12:48 AM
4. Which type of energy is stored for future use?
a. Kinetic energy
b. Potential energy
c. Thermal energy
d. Mechanical energy
ANSWER: b
RATIONALE: Potential energy represents stored energy that can be released later to perform
work, such as energy stored in glycogen or high-energy phosphate compounds.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:31 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 2
,Chapter 02 - Defining and Measuring Energy
5. A cyclist pedaling at 180 Watts with an energy efficiency of 25 percent demonstrates which principle of energy
transfer?
a. Most chemical energy is converted to useful mechanical work.
b. A large portion of chemical energy is released as heat during conversion.
c. Energy conversion in humans is more efficient than in machines.
d. Chemical energy is directly converted to electrical energy in muscles.
ANSWER: b
RATIONALE: The 25 percent efficiency indicates that 75 percent of the chemical energy is not
converted to useful work but is released as heat, demonstrating the relatively
inefficient nature of biological energy conversion.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Apply
DATE CREATED: 4/2/2026 1:32 AM
DATE MODIFIED: 4/9/2026 12:48 AM
6. What are endergonic reactions?
a. Chemical reactions that release large amounts of energy
b. Chemical reactions that require energy input and store energy for later use
c. Chemical reactions that occur spontaneously without energy input
d. Chemical reactions that break down complex molecules into simpler ones
ANSWER: b
RATIONALE: Endergonic reactions are non-spontaneous processes that require energy input to
create high-energy states, allowing energy to be stored for future use.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:33 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 3
,Chapter 02 - Defining and Measuring Energy
7. What are high-energy phosphate compounds?
a. Chemicals that can store energy in their phosphate bonds
b. Proteins that transport phosphate groups across cell membranes
c. Enzymes that break down phosphate-containing molecules
d. Carbohydrates that contain phosphate groups for energy storage
ANSWER: a
RATIONALE: High-energy phosphate compounds are characterized by their ability to store
energy within the chemical bonds of their phosphate groups, which can be released
when needed.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:34 AM
DATE MODIFIED: 4/9/2026 12:48 AM
8. What is the direct source of energy for skeletal muscle contraction?
a. Glucose from the bloodstream
b. Adenosine triphosphate (ATP)
c. Creatine phosphate stored in the muscle
d. Fatty acids from adipose tissue
ANSWER: b
RATIONALE: ATP serves as the immediate and direct energy source for muscle contraction,
providing energy for both force production and muscle relaxation through its
hydrolysis.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:35 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 4
,Chapter 02 - Defining and Measuring Energy
9. What happens to ATP concentrations in skeletal muscle during intense exercise?
a. ATP is completely depleted within the first few seconds.
b. ATP concentrations decrease by 10 to 20 percent but are quickly replenished.
c. ATP concentrations remain constant throughout the exercise period.
d. ATP concentrations increase due to enhanced metabolic activity.
ANSWER: b
RATIONALE: Research shows that ATP concentrations in skeletal muscle decrease modestly
during intense exercise, but the body rapidly activates metabolic pathways to
maintain ATP levels and prevent complete depletion.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:35 AM
DATE MODIFIED: 4/9/2026 12:48 AM
10. According to the sliding filament theory, what role does ATP play in muscle contraction?
a. ATP provides energy for myosin heads to bind to actin and perform power strokes.
b. ATP directly causes calcium ions to be released from the sarcoplasmic reticulum.
c. ATP prevents the formation of crossbridges between actin and myosin.
d. ATP maintains the resting potential across the muscle cell membrane.
ANSWER: a
RATIONALE: In the sliding filament theory, ATP hydrolysis energizes myosin heads, allowing
them to bind to actin and execute power strokes that generate force and
movement.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:36 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 5
,Chapter 02 - Defining and Measuring Energy
11. What is rephosphorylation in the context of muscle energy metabolism?
a. The breakdown of phosphate compounds to release energy
b. The process of reestablishing phosphate bonds to reform ATP from ADP
c. The transport of phosphate groups across cell membranes
d. The storage of phosphate compounds in muscle tissue
ANSWER: b
RATIONALE: Rephosphorylation is the endergonic process that adds a phosphate group back to
ADP to regenerate ATP, ensuring a continuous supply of energy for muscle
function.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:37 AM
DATE MODIFIED: 4/9/2026 12:48 AM
12. What are the three major energy systems that replenish ATP during exercise?
a. Glycolysis, gluconeogenesis, and lipolysis
b. Creatine phosphate, anaerobic glycolysis, and oxidative phosphorylation
c. Protein synthesis, fat oxidation, and carbohydrate metabolism
d. Aerobic respiration, fermentation, and photosynthesis
ANSWER: b
RATIONALE: These three energy systems work together to continuously replenish ATP during
exercise, each contributing differently based on exercise intensity and duration.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:38 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 6
,Chapter 02 - Defining and Measuring Energy
13. A weightlifter performing a maximum bench press relies primarily on which aspect of ATP utilization?
a. Sustained ATP production from fat oxidation
b. Rapid ATP hydrolysis for immediate force production
c. Gradual ATP synthesis from protein breakdown
d. Continuous ATP recycling from aerobic metabolism
ANSWER: b
RATIONALE: Maximum strength exercises like bench pressing require immediate, high-intensity
force production that depends on the rapid breakdown of stored ATP and quickly
available energy systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Apply
DATE CREATED: 4/2/2026 1:39 AM
DATE MODIFIED: 4/9/2026 12:48 AM
14. What is the International System of Units (SI) for measuring energy?
a. Calorie
b. Joule
c. Kilocalorie
d. Watt
ANSWER: b
RATIONALE: The joule is the official SI unit for energy, defined as the work done by a force of 1
Newton to move an object 1 meter.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:41 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 7
, Chapter 02 - Defining and Measuring Energy
15. How many calories are equal to 1 kilocalorie?
a. 10 calories
b. 100 calories
c. 1,000 calories
d. 10,000 calories
ANSWER: c
RATIONALE: One kilocalorie equals 1,000 calories and represents the energy required to raise
the temperature of 1 kilogram of water by 1°C.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:42 AM
DATE MODIFIED: 4/9/2026 12:48 AM
16. How does direct calorimetry determine the energy content of food?
a. By measuring the oxygen consumed during food digestion
b. By measuring the heat produced when food is burned in a bomb calorimeter
c. By calculating the carbon dioxide produced during metabolism
d. By analyzing the chemical composition of macronutrients
ANSWER: b
RATIONALE: Direct calorimetry measures energy content by burning food samples in a bomb
calorimeter and measuring the resulting heat energy released as a temperature
change.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:43 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 8
Important Notes
The file includes the complete test bank, organized chapter by chapter.
A sample of selected pages has been provided for preview.
All available appendices and Excel files (if included in the original resources) are
provided.
We continuously update our files to ensure you receive the latest and most accurate
editions.
New editions are added regularly – stay connected for updates!
⚠️Note on Answer Keys: If the answer key is not included within the chapter
questions, you will find the complete answers and solutions at the end of each
chapter.
✅ Why Buy From Us?
📚 Complete & organized chapter-by-chapter – no missing content, no guessing.
⚡ Instant digital delivery – get your file the moment you pay, no waiting.
📅 Always up to date – we track new editions so you always get the latest version.
💬 Friendly support – real humans ready to help, anytime you need us.
🔒 Safe & secure – thousands of satisfied students trust us every semester.
🛡️Our Guarantees
💰 Money-Back Guarantee: Not satisfied? We offer a full refund – no questions asked.
🔄 Wrong File? No Problem: Contact us and we will replace it immediately with the
correct version, free of charge.
⏰ 24/7 Support: We are always here – reach out anytime and expect a fast response.
Contact Email:
,Chapter 02 - Defining and Measuring Energy
1. What is the scientific definition of energy?
a. The ability to perform work
b. The capacity to generate heat
c. The force required for movement
d. The power needed for metabolism
ANSWER: a
RATIONALE: Energy is scientifically defined as the ability to perform work, which encompasses
all forms of energy conversion and utilization in biological systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:21 AM
DATE MODIFIED: 4/9/2026 12:48 AM
2. What does the First Law of Thermodynamics state about energy in biological systems?
a. Energy can be created from nothing in living organisms.
b. Energy is neither created nor destroyed but can be converted from one form to another.
c. Energy always decreases when transferred between systems.
d. Energy cannot be transferred between different biological processes.
ANSWER: b
RATIONALE: The First Law of Thermodynamics, also known as the law of Conservation of
Energy, establishes that energy cannot be created or destroyed, only converted
between different forms in biological systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:22 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 1
,Chapter 02 - Defining and Measuring Energy
3. What is bioenergetics?
a. The study of energy storage in biological tissues
b. The process of converting chemical energy stored in food into biologically useful forms of energy
c. The measurement of energy expenditure during physical activity
d. The analysis of energy requirements for different metabolic processes
ANSWER: b
RATIONALE: Bioenergetics specifically refers to the process by which chemical energy from
food is converted into forms of energy that can be used by biological systems for
various functions.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:23 AM
DATE MODIFIED: 4/9/2026 12:48 AM
4. Which type of energy is stored for future use?
a. Kinetic energy
b. Potential energy
c. Thermal energy
d. Mechanical energy
ANSWER: b
RATIONALE: Potential energy represents stored energy that can be released later to perform
work, such as energy stored in glycogen or high-energy phosphate compounds.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:31 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 2
,Chapter 02 - Defining and Measuring Energy
5. A cyclist pedaling at 180 Watts with an energy efficiency of 25 percent demonstrates which principle of energy
transfer?
a. Most chemical energy is converted to useful mechanical work.
b. A large portion of chemical energy is released as heat during conversion.
c. Energy conversion in humans is more efficient than in machines.
d. Chemical energy is directly converted to electrical energy in muscles.
ANSWER: b
RATIONALE: The 25 percent efficiency indicates that 75 percent of the chemical energy is not
converted to useful work but is released as heat, demonstrating the relatively
inefficient nature of biological energy conversion.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Apply
DATE CREATED: 4/2/2026 1:32 AM
DATE MODIFIED: 4/9/2026 12:48 AM
6. What are endergonic reactions?
a. Chemical reactions that release large amounts of energy
b. Chemical reactions that require energy input and store energy for later use
c. Chemical reactions that occur spontaneously without energy input
d. Chemical reactions that break down complex molecules into simpler ones
ANSWER: b
RATIONALE: Endergonic reactions are non-spontaneous processes that require energy input to
create high-energy states, allowing energy to be stored for future use.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:33 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 3
,Chapter 02 - Defining and Measuring Energy
7. What are high-energy phosphate compounds?
a. Chemicals that can store energy in their phosphate bonds
b. Proteins that transport phosphate groups across cell membranes
c. Enzymes that break down phosphate-containing molecules
d. Carbohydrates that contain phosphate groups for energy storage
ANSWER: a
RATIONALE: High-energy phosphate compounds are characterized by their ability to store
energy within the chemical bonds of their phosphate groups, which can be released
when needed.
POINTS: 1
REFERENCES: Chapter 2, Section 2.1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.1 - Define and explain the concepts of bioenergetics, energy
transfer, and energy utilization.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:34 AM
DATE MODIFIED: 4/9/2026 12:48 AM
8. What is the direct source of energy for skeletal muscle contraction?
a. Glucose from the bloodstream
b. Adenosine triphosphate (ATP)
c. Creatine phosphate stored in the muscle
d. Fatty acids from adipose tissue
ANSWER: b
RATIONALE: ATP serves as the immediate and direct energy source for muscle contraction,
providing energy for both force production and muscle relaxation through its
hydrolysis.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:35 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 4
,Chapter 02 - Defining and Measuring Energy
9. What happens to ATP concentrations in skeletal muscle during intense exercise?
a. ATP is completely depleted within the first few seconds.
b. ATP concentrations decrease by 10 to 20 percent but are quickly replenished.
c. ATP concentrations remain constant throughout the exercise period.
d. ATP concentrations increase due to enhanced metabolic activity.
ANSWER: b
RATIONALE: Research shows that ATP concentrations in skeletal muscle decrease modestly
during intense exercise, but the body rapidly activates metabolic pathways to
maintain ATP levels and prevent complete depletion.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:35 AM
DATE MODIFIED: 4/9/2026 12:48 AM
10. According to the sliding filament theory, what role does ATP play in muscle contraction?
a. ATP provides energy for myosin heads to bind to actin and perform power strokes.
b. ATP directly causes calcium ions to be released from the sarcoplasmic reticulum.
c. ATP prevents the formation of crossbridges between actin and myosin.
d. ATP maintains the resting potential across the muscle cell membrane.
ANSWER: a
RATIONALE: In the sliding filament theory, ATP hydrolysis energizes myosin heads, allowing
them to bind to actin and execute power strokes that generate force and
movement.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:36 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 5
,Chapter 02 - Defining and Measuring Energy
11. What is rephosphorylation in the context of muscle energy metabolism?
a. The breakdown of phosphate compounds to release energy
b. The process of reestablishing phosphate bonds to reform ATP from ADP
c. The transport of phosphate groups across cell membranes
d. The storage of phosphate compounds in muscle tissue
ANSWER: b
RATIONALE: Rephosphorylation is the endergonic process that adds a phosphate group back to
ADP to regenerate ATP, ensuring a continuous supply of energy for muscle
function.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:37 AM
DATE MODIFIED: 4/9/2026 12:48 AM
12. What are the three major energy systems that replenish ATP during exercise?
a. Glycolysis, gluconeogenesis, and lipolysis
b. Creatine phosphate, anaerobic glycolysis, and oxidative phosphorylation
c. Protein synthesis, fat oxidation, and carbohydrate metabolism
d. Aerobic respiration, fermentation, and photosynthesis
ANSWER: b
RATIONALE: These three energy systems work together to continuously replenish ATP during
exercise, each contributing differently based on exercise intensity and duration.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:38 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 6
,Chapter 02 - Defining and Measuring Energy
13. A weightlifter performing a maximum bench press relies primarily on which aspect of ATP utilization?
a. Sustained ATP production from fat oxidation
b. Rapid ATP hydrolysis for immediate force production
c. Gradual ATP synthesis from protein breakdown
d. Continuous ATP recycling from aerobic metabolism
ANSWER: b
RATIONALE: Maximum strength exercises like bench pressing require immediate, high-intensity
force production that depends on the rapid breakdown of stored ATP and quickly
available energy systems.
POINTS: 1
REFERENCES: Chapter 2, Section 2.2
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.2 - Explain how energy is used by skeletal muscle during
exercise.
KEYWORDS: Apply
DATE CREATED: 4/2/2026 1:39 AM
DATE MODIFIED: 4/9/2026 12:48 AM
14. What is the International System of Units (SI) for measuring energy?
a. Calorie
b. Joule
c. Kilocalorie
d. Watt
ANSWER: b
RATIONALE: The joule is the official SI unit for energy, defined as the work done by a force of 1
Newton to move an object 1 meter.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:41 AM
DATE MODIFIED: 4/9/2026 12:48 AM
Copyright Cengage Learning. Powered by Cognero. Page 7
, Chapter 02 - Defining and Measuring Energy
15. How many calories are equal to 1 kilocalorie?
a. 10 calories
b. 100 calories
c. 1,000 calories
d. 10,000 calories
ANSWER: c
RATIONALE: One kilocalorie equals 1,000 calories and represents the energy required to raise
the temperature of 1 kilogram of water by 1°C.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Remember
DATE CREATED: 4/2/2026 1:42 AM
DATE MODIFIED: 4/9/2026 12:48 AM
16. How does direct calorimetry determine the energy content of food?
a. By measuring the oxygen consumed during food digestion
b. By measuring the heat produced when food is burned in a bomb calorimeter
c. By calculating the carbon dioxide produced during metabolism
d. By analyzing the chemical composition of macronutrients
ANSWER: b
RATIONALE: Direct calorimetry measures energy content by burning food samples in a bomb
calorimeter and measuring the resulting heat energy released as a temperature
change.
POINTS: 1
REFERENCES: Chapter 2, Section 2.3
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: DOYLE.NSE.6.2.3 - Explain how the energy content of food and energy
expenditure are measured directly and indirectly.
KEYWORDS: Understand
DATE CREATED: 4/2/2026 1:43 AM
DATE MODIFIED: 4/9/2026 12:48 AM
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