Question 1

Heat loss to the cooler air that moves across the surface of your body is called

Accepted Answer

A) radiation. 
B) conduction. 
C) convection. 
D) evaporation. 
E) transmission. 
A) radiation. 
B) conduction. 
C) convection. 
D) evaporation. 
E) transmission.

Question 2

The chemical equation that correctly summarizes the overall reaction in oxidative phosphorylation is

Accepted Answer

A) H₂ + O₂ → H₂O + O. 
B) 2 H₂ + O₂ → 2 H₂O. 
C) 3 H₂ + 2O₂ → 3 H₂O + 2 O. 
D) H₂ + O₂ → H₂O. 
E) P + 3 O → PO₃. 
A) H₂ + O₂ → H₂O + O. 
B) 2 H₂ + O₂ → 2 H₂O. 
C) 3 H₂ + 2O₂ → 3 H₂O + 2 O. 
D) H₂ + O₂ → H₂O. 
E) P + 3 O → PO₃.

Question 3

When NAD+ is ________ it becomes NADH.When NADH is ________ it becomes NAD+.

Accepted Answer

A) phosphorylated; deaminated 
B) reduced; oxidized 
C) made; recycled 
D) phosphorylated; dephosphorylated 
E) oxidized; reduced 
A) phosphorylated; deaminated 
B) reduced; oxidized 
C) made; recycled 
D) phosphorylated; dephosphorylated 
E) oxidized; reduced

Question 4

More than half the heat is lost from the body indoors through the process of

Accepted Answer

A) radiation. 
B) conduction. 
C) convection. 
D) evaporation. 
E) concentration. 
A) radiation. 
B) conduction. 
C) convection. 
D) evaporation. 
E) concentration.

Question 5

Impaired fat absorption in the intestine would interfere with the absorption of

Accepted Answer

A) vitamin A. 
B) vitamin B₁₂. 
C) vitamin C. 
D) niacin. 
E) riboflavin. 
A) vitamin A. 
B) vitamin B₁₂. 
C) vitamin C. 
D) niacin. 
E) riboflavin.

Question 6

The process of synthesizing glucose from noncarbohydrates is called

Accepted Answer

A) glycolysis. 
B) gluconeogenesis. 
C) cellular respiration. 
D) glycemia. 
E) glycogenesis. 
A) glycolysis. 
B) gluconeogenesis. 
C) cellular respiration. 
D) glycemia. 
E) glycogenesis.

Question 7

Wally decides to go on a hunger strike to further one of his favorite causes.After many days with nothing but water,you would not expect to observe

Accepted Answer

A) elevated levels of glucocorticoids. 
B) ketone bodies in his urine. 
C) decreased blood pH. 
D) increased insulin secretion. 
E) All of the answers are correct. 
A) elevated levels of glucocorticoids. 
B) ketone bodies in his urine. 
C) decreased blood pH. 
D) increased insulin secretion. 
E) All of the answers are correct.

Question 8

The end products of aerobic respiration are

Accepted Answer

A) carbon dioxide,water,and ATP. 
B) pyruvic acid and carbon dioxide. 
C) carbon dioxide and alcohol. 
D) oxygen and water. 
E) NADH and FADH2. 
A) carbon dioxide,water,and ATP. 
B) pyruvic acid and carbon dioxide. 
C) carbon dioxide and alcohol. 
D) oxygen and water. 
E) NADH and FADH2.

Question 9

Figure 25-1 The Citric Acid Cycle
Use Figure 25-1 to answer the following questions:
-What is the molecule labeled "7"?

Accepted Answer

A) hydrogen atoms 
B) citric acid 
C) 4 carbon molecule 
D) NADH 
E) FADH₂ 
A) hydrogen atoms 
B) citric acid 
C) 4 carbon molecule 
D) NADH 
E) FADH₂

Question 10

Most of the ATP from metabolism is produced in the

Accepted Answer

A) citric acid cycle. 
B) electron transport system. 
C) cytosol. 
D) mitochondrial matrix. 
E) glycolysis. 
A) citric acid cycle. 
B) electron transport system. 
C) cytosol. 
D) mitochondrial matrix. 
E) glycolysis.

Question 11

The essential fatty acids are

Accepted Answer

A) linoleic acid and linolenic acid. 
B) leucine and lysine. 
C) cholesterol and glycerol. 
D) HDLs and LDLs. 
E) glycerol and pyruvic acid. 
A) linoleic acid and linolenic acid. 
B) leucine and lysine. 
C) cholesterol and glycerol. 
D) HDLs and LDLs. 
E) glycerol and pyruvic acid.

Question 12

Nitrogen compounds of the body include all of the following except

Accepted Answer

A) amino acids. 
B) oxaloacetate. 
C) creatine. 
D) porphyrin. 
E) purines. 
A) amino acids. 
B) oxaloacetate. 
C) creatine. 
D) porphyrin. 
E) purines.

Question 13

The vitamin that is a constituent of coenzyme A is

Accepted Answer

A) folic acid (folate). 
B) pantothenic acid. 
C) pyridoxine (B₆). 
D) riboflavin. 
E) niacin. 
A) folic acid (folate). 
B) pantothenic acid. 
C) pyridoxine (B₆). 
D) riboflavin. 
E) niacin.

Question 14

A(n)________ protein contains all of the essential amino acids.

Accepted Answer

A) complete 
B) vital 
C) phosphorylated 
D) incomplete 
E) real 
A) complete 
B) vital 
C) phosphorylated 
D) incomplete 
E) real

Question 15

Figure 25-1 The Citric Acid Cycle
Use Figure 25-1 to answer the following questions:
-What is the substance labeled "4"?

Accepted Answer

A) hydrogen atoms 
B) citric acid 
C) 4 carbon molecule 
D) NADH 
E) FADH₂ 
A) hydrogen atoms 
B) citric acid 
C) 4 carbon molecule 
D) NADH 
E) FADH₂

Question 16

All of the following occur during the postabsorptive state except that

Accepted Answer

A) glycogenolysis occurs in the liver. 
B) levels of blood glucose are elevated. 
C) ketone bodies may be formed. 
D) fat mobilization occurs. 
E) gluconeogenesis occurs in the liver. 
A) glycogenolysis occurs in the liver. 
B) levels of blood glucose are elevated. 
C) ketone bodies may be formed. 
D) fat mobilization occurs. 
E) gluconeogenesis occurs in the liver.

Question 17

________ are the largest lipoproteins,ranging in diameter up to 0.5 µm,produced by intestinal epithelial cells from the fats in food.

Accepted Answer

A) Very-low-density lipoproteins (VLDLs) 
B) Low-density lipoproteins (LDLs) 
C) Intermediate-density lipoproteins (IDLs) 
D) High-density lipoproteins (HDLs) 
E) Chylomicrons 
A) Very-low-density lipoproteins (VLDLs) 
B) Low-density lipoproteins (LDLs) 
C) Intermediate-density lipoproteins (IDLs) 
D) High-density lipoproteins (HDLs) 
E) Chylomicrons

Question 18

What is the role of NADH in metabolism?

Accepted Answer

A) convert pyruvic acid into acetyl-coA 
B) produce bicarbonate ions for a pH buffer 
C) transport hydrogen atoms to coenzymes 
D) produce carbon dioxide 
E) phosphorylate ADP into ATP 
A) convert pyruvic acid into acetyl-coA 
B) produce bicarbonate ions for a pH buffer 
C) transport hydrogen atoms to coenzymes 
D) produce carbon dioxide 
E) phosphorylate ADP into ATP

Question 19

Gluconeogenesis is the synthesis of ________ from noncarbohydrate precursors,such as lactate,glycerol,or amino acids.

Accepted Answer

A) glycerides 
B) glucagon 
C) glycogen 
D) glucose 
A) glycerides 
B) glucagon 
C) glycogen 
D) glucose

Question 20

All of the following occur when the temperature of the preoptic area of the hypothalamus drops below its thermostat setting except

Accepted Answer

A) blood flow to the skin increases. 
B) shivering thermogenesis occurs. 
C) nonshivering thermogenesis occurs. 
D) epinephrine levels rise. 
E) blood returning from limbs is shunted to deep veins. 
A) blood flow to the skin increases. 
B) shivering thermogenesis occurs. 
C) nonshivering thermogenesis occurs. 
D) epinephrine levels rise. 
E) blood returning from limbs is shunted to deep veins.

Exam 25: Metabolism and Energetics

Heat loss to the cooler air that moves across the surface of your body is called

The chemical equation that correctly summarizes the overall reaction in oxidative phosphorylation is

When NAD+ is ________ it becomes NADH.When NADH is ________ it becomes NAD+.

More than half the heat is lost from the body indoors through the process of

Impaired fat absorption in the intestine would interfere with the absorption of

The process of synthesizing glucose from noncarbohydrates is called

Wally decides to go on a hunger strike to further one of his favorite causes.After many days with nothing but water,you would not expect to observe

The end products of aerobic respiration are

Figure 25-1 The Citric Acid Cycle Use Figure 25-1 to answer the following questions: -What is the molecule labeled "7"?

Most of the ATP from metabolism is produced in the

The essential fatty acids are

Nitrogen compounds of the body include all of the following except

The vitamin that is a constituent of coenzyme A is

A(n)________ protein contains all of the essential amino acids.

Figure 25-1 The Citric Acid Cycle Use Figure 25-1 to answer the following questions: -What is the substance labeled "4"?

All of the following occur during the postabsorptive state except that

________ are the largest lipoproteins,ranging in diameter up to 0.5 µm,produced by intestinal epithelial cells from the fats in food.

What is the role of NADH in metabolism?

Gluconeogenesis is the synthesis of ________ from noncarbohydrate precursors,such as lactate,glycerol,or amino acids.

All of the following occur when the temperature of the preoptic area of the hypothalamus drops below its thermostat setting except

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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When NAD+ is it becomes NADH.When NADH is it becomes NAD+.