Question 1

A T₄ assay is used to

Accepted Answer

A) determine the number of calories in food. 
B) directly measure the basal metabolic rate. 
C) obtain an index of metabolic activity. 
D) monitor the energy efficiency of metabolism. 
E) determine the amount of oxygen consumed during metabolism. 
A) determine the number of calories in food. 
B) directly measure the basal metabolic rate. 
C) obtain an index of metabolic activity. 
D) monitor the energy efficiency of metabolism. 
E) determine the amount of oxygen consumed during metabolism.

Question 2

List and briefly describe the body's five metabolic components.

Accepted Answer

The body has five metabolic components:

Question 3

In oxidative phosphorylation,energy for the synthesis of ATP is directly obtained from the

Accepted Answer

A) splitting of oxygen molecules. 
B) breaking of the covalent bonds in glucose. 
C) movement of hydrogen ions through channels in the inner mitochondrial membrane. 
D) combination of two atoms of hydrogen and one atom of oxygen to form water. 
E) oxidation of acetyl-CoA. 
A) splitting of oxygen molecules. 
B) breaking of the covalent bonds in glucose. 
C) movement of hydrogen ions through channels in the inner mitochondrial membrane. 
D) combination of two atoms of hydrogen and one atom of oxygen to form water. 
E) oxidation of acetyl-CoA.

Question 4

Briefly outline the role of the liver in glucose metabolism.

Accepted Answer

During the absorptive state,under insuli

Question 5

Cells perform catabolism to generate ATP,which can be used for

Accepted Answer

A) muscle contraction. 
B) ion transport. 
C) protein synthesis. 
D) glycogen synthesis. 
E) All of the answers are correct. 
A) muscle contraction. 
B) ion transport. 
C) protein synthesis. 
D) glycogen synthesis. 
E) All of the answers are correct.

Question 6

If 8 molecules of NADH from the citric acid cycle entered the ETS,how much ATP would be produced?

Accepted Answer

A) 36 ATP 
B) 32 ATP 
C) 3 ATP 
D) 8 ATP 
E) 24 ATP 
A) 36 ATP 
B) 32 ATP 
C) 3 ATP 
D) 8 ATP 
E) 24 ATP

Question 7

In order to determine the LDL level in a patient's blood,it is necessary to measure

Accepted Answer

A) total cholesterol level. 
B) HDL level. 
C) triglyceride level. 
D) triglyceride and monoglyceride levels. 
E) total cholesterol level,HDL level,and triglyceride level. 
A) total cholesterol level. 
B) HDL level. 
C) triglyceride level. 
D) triglyceride and monoglyceride levels. 
E) total cholesterol level,HDL level,and triglyceride level.

Question 8

In the electron transport chain,

Accepted Answer

A) NADH and FADH₂ donate hydrogen atoms. 
B) reduced molecules transfer energy to ATP formation. 
C) oxidative phosphorylation leads to ATP formation. 
D) generates a concentration gradient by pumping hydrogen ions. 
E) All of the answers are correct. 
A) NADH and FADH₂ donate hydrogen atoms. 
B) reduced molecules transfer energy to ATP formation. 
C) oxidative phosphorylation leads to ATP formation. 
D) generates a concentration gradient by pumping hydrogen ions. 
E) All of the answers are correct.

Question 9

The strategy of eating starchy foods for several days before an athletic event is known as

Accepted Answer

A) carbohydrate craving. 
B) the Atkins diet. 
C) carbohydrate loading. 
D) glycolysis reaction. 
E) overeating. 
A) carbohydrate craving. 
B) the Atkins diet. 
C) carbohydrate loading. 
D) glycolysis reaction. 
E) overeating.

Question 10

In glycolysis,each molecule of glucose that is catabolized gives a net yield of how many molecules of ATP?

Accepted Answer

A) 2 
B) 4 
C) 30 
D) 36 
E) 38 
A) 2 
B) 4 
C) 30 
D) 36 
E) 38

Question 11

An ion that is a necessary component of high-energy compounds and nucleic acids and a structural component of bone is the ________ ion.

Accepted Answer

A) chloride 
B) sulfate 
C) phosphate 
D) bicarbonate 
E) iodide 
A) chloride 
B) sulfate 
C) phosphate 
D) bicarbonate 
E) iodide

Question 12

The drug colestipol binds bile salts in the intestine,forming complexes that cannot be absorbed.How would this drug affect cholesterol levels in blood?

Accepted Answer

Colestipol would lead to a decrease in t

Question 13

The major steps in oxidative phosphorylation include all of the following except

Accepted Answer

A) removal of hydrogen atoms from a substrate molecule by coenzymes. 
B) ionization of hydrogen atoms. 
C) decreasing the energy level of electrons passing through the electron transport chain. 
D) the breaking of carbon-carbon covalent bonds. 
E) the acceptance of electrons by oxygen atoms. 
A) removal of hydrogen atoms from a substrate molecule by coenzymes. 
B) ionization of hydrogen atoms. 
C) decreasing the energy level of electrons passing through the electron transport chain. 
D) the breaking of carbon-carbon covalent bonds. 
E) the acceptance of electrons by oxygen atoms.

Question 14

Urea is formed in the

Accepted Answer

A) liver. 
B) stomach. 
C) kidneys. 
D) small intestine. 
E) large intestine. 
A) liver. 
B) stomach. 
C) kidneys. 
D) small intestine. 
E) large intestine.

Question 15

Which of the following statements regarding brown fat is false?

Accepted Answer

A) Brown fat is found in infants. 
B) Brown fat functions in nonshivering thermogenesis. 
C) Brown fat contains a rich vascular supply. 
D) Brown fat is innervated by the sympathetic nervous system. 
E) Brown fat is concentrated around visceral organs in the adult. 
A) Brown fat is found in infants. 
B) Brown fat functions in nonshivering thermogenesis. 
C) Brown fat contains a rich vascular supply. 
D) Brown fat is innervated by the sympathetic nervous system. 
E) Brown fat is concentrated around visceral organs in the adult.

Question 16

The citric acid cycle occurs in the

Accepted Answer

A) cytosol. 
B) golgi apparatus. 
C) mitochondrial intermembrane space. 
D) mitochondrial matrix. 
E) ribosome. 
A) cytosol. 
B) golgi apparatus. 
C) mitochondrial intermembrane space. 
D) mitochondrial matrix. 
E) ribosome.

Question 17

Figure 25-1 The Citric Acid Cycle
Use Figure 25-1 to answer the following questions:
-What is the molecule labeled "2"?

Accepted Answer

A) hydrogen atoms 
B) citric acid 
C) NADH 
D) carbon dioxide 
E) FADH₂ 
A) hydrogen atoms 
B) citric acid 
C) NADH 
D) carbon dioxide 
E) FADH₂

Question 18

The conversion of ammonia into a less toxic substance produces

Accepted Answer

A) ketone bodies. 
B) urea. 
C) nitrate. 
D) acetyl-CoA. 
E) water. 
A) ketone bodies. 
B) urea. 
C) nitrate. 
D) acetyl-CoA. 
E) water.

Question 19

Metabolism of amino acids in the citric acid cycle yields

Accepted Answer

A) more energy than lipid metabolism. 
B) more energy than carbohydrate metabolism. 
C) approximately the same energy as lipid metabolism. 
D) approximately the same energy as carbohydrate metabolism. 
E) more energy than lipid and carbohydrate metabolism combined. 
A) more energy than lipid metabolism. 
B) more energy than carbohydrate metabolism. 
C) approximately the same energy as lipid metabolism. 
D) approximately the same energy as carbohydrate metabolism. 
E) more energy than lipid and carbohydrate metabolism combined.

Question 20

The nutrients that yield the most energy per gram when metabolized are

Accepted Answer

A) carbohydrates. 
B) proteins. 
C) fats. 
D) nucleic acids. 
E) vitamins. 
A) carbohydrates. 
B) proteins. 
C) fats. 
D) nucleic acids. 
E) vitamins.

Exam 25: Metabolism and Energetics

A T₄ assay is used to

List and briefly describe the body's five metabolic components.

In oxidative phosphorylation,energy for the synthesis of ATP is directly obtained from the

Briefly outline the role of the liver in glucose metabolism.

Cells perform catabolism to generate ATP,which can be used for

If 8 molecules of NADH from the citric acid cycle entered the ETS,how much ATP would be produced?

In order to determine the LDL level in a patient's blood,it is necessary to measure

In the electron transport chain,

The strategy of eating starchy foods for several days before an athletic event is known as

In glycolysis,each molecule of glucose that is catabolized gives a net yield of how many molecules of ATP?

An ion that is a necessary component of high-energy compounds and nucleic acids and a structural component of bone is the ________ ion.

The drug colestipol binds bile salts in the intestine,forming complexes that cannot be absorbed.How would this drug affect cholesterol levels in blood?

The major steps in oxidative phosphorylation include all of the following except

Urea is formed in the

Which of the following statements regarding brown fat is false?

The citric acid cycle occurs in the

Figure 25-1 The Citric Acid Cycle Use Figure 25-1 to answer the following questions: -What is the molecule labeled "2"?

The conversion of ammonia into a less toxic substance produces

Metabolism of amino acids in the citric acid cycle yields

The nutrients that yield the most energy per gram when metabolized are

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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