,Essential Pathophysiology Test Bank: 880+
MCQs for Full Chapter Mastery (7th Ed.)
Contents
PART ONE: BASIC CONCEPTS OF PATHOPHYSIOLOGY
Unit 1: The Cell
1. Cellular Biology
2. Genes and Genetic Diseases
3. Epigenetics and Disease
4. Altered Cellular and Tissue Biology
5. Fluids and Electrolytes, Acids and Bases
Unit 2: Mechanisms of Self-Defense
6. Innate Immunity: Inflammation and Wound Healing
7. Adaptive Immunity
8. Alterations in Immunity NEW
9. Infection and Defects in Mechanisms of Defense
10. Stress and Disease
Unit 3: Cellular Proliferation: Cancer
11. Biology of Cancer
12. Cancer Epidemiology
13. Cancer in Children and Adolescents
PART TWO: BODY SYSTEMS AND DISEASES
Unit 4: The Neurologic System
14. Structure and Function of the Neurologic System
15. Pain, Temperature, Sleep, and Sensory Function
16. Alterations in Cognitive Systems, Cerebral Hemodynamics, and Motor Function
17. Disorders of the Central and Peripheral Nervous Systems and Neuromuscular Junction
18. Alterations of Neurologic Function in Children
Unit 5: The Endocrine System
19. Mechanisms of Hormonal Regulation
20. Alterations of Hormonal Regulation
21. Obesity and Disorders of Nutrition NEW
Unit 6: The Hematologic System
22. Structure and Function of the Hematologic System
23. Alterations of Hematologic Function
24. Alterations of Hematologic Function in Children
Unit 7: The Cardiovascular and Lymphatic Systems
25. Structure and Function of the Cardiovascular and Lymphatic Systems
,26. Alterations of Cardiovascular Function
27. Alterations of Cardiovascular Function in Children
Unit 8: The Pulmonary System
28. Structure and Function of the Pulmonary System
29. Alterations of Pulmonary Function
30. Alterations of Pulmonary Function in Children
Unit 9: The Renal and Urologic Systems
31. Structure and Function of the Renal and Urologic Systems
32. Alterations of Renal and Urinary Tract Function
33. Alterations of Renal and Urinary Tract Function in Children
Unit 10: The Reproductive Systems
34. Structure and Function of the Reproductive Systems
35. Alterations of the Female Reproductive System
36. Alterations of the Male Reproductive System
Unit 11: The Digestive System
37. Structure and Function of the Digestive System
38. Alterations of Digestive Function
39. Alterations of Digestive Function in Children
Unit 12: The Musculoskeletal and Integumentary Systems
40. Structure and Function of the Musculoskeletal System
41. Alterations of Musculoskeletal Function
42. Alterations of Musculoskeletal Function in Children
43. Structure, Function, and Disorders of the Integument
44. Alterations of the Integument in Children
,Section 1.1 Prokaryotes and Eukaryotes
1. Which of the following is a key structural difference
between prokaryotic and eukaryotic cells?
A. Presence of ribosomes
B. Presence of a defined nucleus
C. Presence of a plasma membrane
D. Presence of DNA as genetic material
Correct Answer: B
Rationale: Eukaryotes have a membrane-bound nucleus,
whereas prokaryotes have their DNA in a nucleoid region
without a surrounding membrane.
Section Reference: 1.1 Prokaryotes and Eukaryotes
2. Prokaryotic cells differ from eukaryotic cells in that
prokaryotes:
A. Perform transcription in the nucleus
B. Contain membrane-bound organelles
C. Have circular DNA
D. Undergo mitosis
Correct Answer: C
Rationale: Prokaryotic DNA is typically circular and not
enclosed within a nuclear membrane.
Section Reference: 1.1 Prokaryotes and Eukaryotes
3. Which feature is shared by all prokaryotes but not by
eukaryotes?
A. Peptidoglycan cell wall
B. Linear chromosomes
, C. Endoplasmic reticulum
D. Mitochondria
Correct Answer: A
Rationale: Many prokaryotes (bacteria) have cell walls
composed of peptidoglycan; eukaryotes do not.
Section Reference: 1.1 Prokaryotes and Eukaryotes
4. In which of the following processes do prokaryotes and
eukaryotes both participate?
A. Spliceosomal RNA splicing
B. Binary fission
C. Translation at the ribosome
D. Endocytosis
Correct Answer: C
Rationale: Both cell types use ribosomes for protein
synthesis (translation).
Section Reference: 1.1 Prokaryotes and Eukaryotes
Section 1.2 Cellular Functions
5. The primary function of the sodium–potassium pump is
to:
A. Generate ATP
B. Maintain membrane potential
C. Facilitate endocytosis
D. Produce secretory vesicles
Correct Answer: B
Rationale: The Na⁺/K⁺-ATPase actively transports ions to
, maintain the resting membrane potential.
Section Reference: 1.2 Cellular Functions
6. Which cellular function is most directly responsible for
cell-to-cell adhesion?
A. Signal transduction
B. Membrane transport
C. Expression of cell adhesion molecules
D. Mitochondrial ATP production
Correct Answer: C
Rationale: Cell adhesion molecules on the membrane
mediate attachment between neighboring cells.
Section Reference: 1.2 Cellular Functions
7. A primary role of lysosomes is to:
A. Synthesize lipids
B. Digest macromolecules
C. Produce ribosomal RNA
D. Generate energy
Correct Answer: B
Rationale: Lysosomes contain hydrolytic enzymes that
break down proteins, lipids, and other macromolecules.
Section Reference: 1.2 Cellular Functions
8. Which function is attributable to the rough endoplasmic
reticulum (RER)?
A. Steroid synthesis
B. ATP synthesis
C. Protein synthesis for export
, D. Detoxification of drugs
Correct Answer: C
Rationale: The RER, studded with ribosomes, synthesizes
proteins destined for secretion or membrane insertion.
Section Reference: 1.2 Cellular Functions
Section 1.3 Structure and Function of Cellular Components
1.3.1 Plasma Membrane
9. Which lipid is most abundant in the plasma membrane
and contributes to its fluidity?
A. Cholesterol
B. Phospholipids
C. Glycolipids
D. Triglycerides
Correct Answer: B
Rationale: Phospholipids form the bilayer structure and
determine membrane fluidity.
Section Reference: 1.3.1 Plasma Membrane
10. Glycolipids in the plasma membrane primarily
function to:
A. Provide rigidity
B. Serve as recognition sites
C. Generate ATP
D. Transport ions
Correct Answer: B
, Rationale: Glycolipids on the outer membrane surface
participate in cell recognition and signaling.
Section Reference: 1.3.1 Plasma Membrane
1.3.2 Cytoplasmic Organelles
11. Which organelle is responsible for detoxification of
chemicals and lipid synthesis?
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: The smooth ER lacks ribosomes and functions in
lipid metabolism and detoxification.
Section Reference: 1.3.2 Cytoplasmic Organelles
12. The Golgi apparatus is primarily involved in:
A. ATP production
B. Protein modification and packaging
C. DNA replication
D. Lipid degradation
Correct Answer: B
Rationale: Proteins from the RER are modified, sorted, and
packaged in the Golgi for secretion.
Section Reference: 1.3.2 Cytoplasmic Organelles
13. What is the main function of peroxisomes?
A. Synthesis of cholesterol
B. Beta-oxidation of very long chain fatty acids
, C. Protein synthesis
D. Glycogen storage
Correct Answer: B
Rationale: Peroxisomes break down very long chain fatty
acids via β-oxidation.
Section Reference: 1.3.2 Cytoplasmic Organelles
14. Which of the following organelles contains its own
DNA?
A. Lysosomes
B. Mitochondria
C. Peroxisomes
D. Endosomes
Correct Answer: B
Rationale: Mitochondria have circular DNA and replicate
independently of the nucleus.
Section Reference: 1.3.2 Cytoplasmic Organelles
1.3.3 Cytoskeleton
15. Microtubules are composed of which protein?
A. Actin
B. Tubulin
C. Keratin
D. Myosin
Correct Answer: B
Rationale: Tubulin monomers assemble into hollow
microtubules for structural support and transport.
Section Reference: 1.3.3 Cytoskeleton
, 16. Actin filaments primarily contribute to:
A. Vesicle formation
B. Muscle contraction and cell motility
C. Chromosome separation
D. DNA transcription
Correct Answer: B
Rationale: Actin filaments enable cell shape changes,
motility, and muscle contraction through interactions with
myosin.
Section Reference: 1.3.3 Cytoskeleton
17. Intermediate filaments function mainly to:
A. Facilitate intracellular transport
B. Provide tensile strength to cells
C. Drive cytokinesis
D. Synthesize proteins
Correct Answer: B
Rationale: Intermediate filaments resist mechanical stress,
maintaining cell integrity.
Section Reference: 1.3.3 Cytoskeleton
1.3.4 Nucleus and DNA/RNA Synthesis
18. Which enzyme is responsible for DNA replication in
the nucleus?
A. RNA polymerase II
B. DNA ligase
C. DNA polymerase
D. Reverse transcriptase
MCQs for Full Chapter Mastery (7th Ed.)
Contents
PART ONE: BASIC CONCEPTS OF PATHOPHYSIOLOGY
Unit 1: The Cell
1. Cellular Biology
2. Genes and Genetic Diseases
3. Epigenetics and Disease
4. Altered Cellular and Tissue Biology
5. Fluids and Electrolytes, Acids and Bases
Unit 2: Mechanisms of Self-Defense
6. Innate Immunity: Inflammation and Wound Healing
7. Adaptive Immunity
8. Alterations in Immunity NEW
9. Infection and Defects in Mechanisms of Defense
10. Stress and Disease
Unit 3: Cellular Proliferation: Cancer
11. Biology of Cancer
12. Cancer Epidemiology
13. Cancer in Children and Adolescents
PART TWO: BODY SYSTEMS AND DISEASES
Unit 4: The Neurologic System
14. Structure and Function of the Neurologic System
15. Pain, Temperature, Sleep, and Sensory Function
16. Alterations in Cognitive Systems, Cerebral Hemodynamics, and Motor Function
17. Disorders of the Central and Peripheral Nervous Systems and Neuromuscular Junction
18. Alterations of Neurologic Function in Children
Unit 5: The Endocrine System
19. Mechanisms of Hormonal Regulation
20. Alterations of Hormonal Regulation
21. Obesity and Disorders of Nutrition NEW
Unit 6: The Hematologic System
22. Structure and Function of the Hematologic System
23. Alterations of Hematologic Function
24. Alterations of Hematologic Function in Children
Unit 7: The Cardiovascular and Lymphatic Systems
25. Structure and Function of the Cardiovascular and Lymphatic Systems
,26. Alterations of Cardiovascular Function
27. Alterations of Cardiovascular Function in Children
Unit 8: The Pulmonary System
28. Structure and Function of the Pulmonary System
29. Alterations of Pulmonary Function
30. Alterations of Pulmonary Function in Children
Unit 9: The Renal and Urologic Systems
31. Structure and Function of the Renal and Urologic Systems
32. Alterations of Renal and Urinary Tract Function
33. Alterations of Renal and Urinary Tract Function in Children
Unit 10: The Reproductive Systems
34. Structure and Function of the Reproductive Systems
35. Alterations of the Female Reproductive System
36. Alterations of the Male Reproductive System
Unit 11: The Digestive System
37. Structure and Function of the Digestive System
38. Alterations of Digestive Function
39. Alterations of Digestive Function in Children
Unit 12: The Musculoskeletal and Integumentary Systems
40. Structure and Function of the Musculoskeletal System
41. Alterations of Musculoskeletal Function
42. Alterations of Musculoskeletal Function in Children
43. Structure, Function, and Disorders of the Integument
44. Alterations of the Integument in Children
,Section 1.1 Prokaryotes and Eukaryotes
1. Which of the following is a key structural difference
between prokaryotic and eukaryotic cells?
A. Presence of ribosomes
B. Presence of a defined nucleus
C. Presence of a plasma membrane
D. Presence of DNA as genetic material
Correct Answer: B
Rationale: Eukaryotes have a membrane-bound nucleus,
whereas prokaryotes have their DNA in a nucleoid region
without a surrounding membrane.
Section Reference: 1.1 Prokaryotes and Eukaryotes
2. Prokaryotic cells differ from eukaryotic cells in that
prokaryotes:
A. Perform transcription in the nucleus
B. Contain membrane-bound organelles
C. Have circular DNA
D. Undergo mitosis
Correct Answer: C
Rationale: Prokaryotic DNA is typically circular and not
enclosed within a nuclear membrane.
Section Reference: 1.1 Prokaryotes and Eukaryotes
3. Which feature is shared by all prokaryotes but not by
eukaryotes?
A. Peptidoglycan cell wall
B. Linear chromosomes
, C. Endoplasmic reticulum
D. Mitochondria
Correct Answer: A
Rationale: Many prokaryotes (bacteria) have cell walls
composed of peptidoglycan; eukaryotes do not.
Section Reference: 1.1 Prokaryotes and Eukaryotes
4. In which of the following processes do prokaryotes and
eukaryotes both participate?
A. Spliceosomal RNA splicing
B. Binary fission
C. Translation at the ribosome
D. Endocytosis
Correct Answer: C
Rationale: Both cell types use ribosomes for protein
synthesis (translation).
Section Reference: 1.1 Prokaryotes and Eukaryotes
Section 1.2 Cellular Functions
5. The primary function of the sodium–potassium pump is
to:
A. Generate ATP
B. Maintain membrane potential
C. Facilitate endocytosis
D. Produce secretory vesicles
Correct Answer: B
Rationale: The Na⁺/K⁺-ATPase actively transports ions to
, maintain the resting membrane potential.
Section Reference: 1.2 Cellular Functions
6. Which cellular function is most directly responsible for
cell-to-cell adhesion?
A. Signal transduction
B. Membrane transport
C. Expression of cell adhesion molecules
D. Mitochondrial ATP production
Correct Answer: C
Rationale: Cell adhesion molecules on the membrane
mediate attachment between neighboring cells.
Section Reference: 1.2 Cellular Functions
7. A primary role of lysosomes is to:
A. Synthesize lipids
B. Digest macromolecules
C. Produce ribosomal RNA
D. Generate energy
Correct Answer: B
Rationale: Lysosomes contain hydrolytic enzymes that
break down proteins, lipids, and other macromolecules.
Section Reference: 1.2 Cellular Functions
8. Which function is attributable to the rough endoplasmic
reticulum (RER)?
A. Steroid synthesis
B. ATP synthesis
C. Protein synthesis for export
, D. Detoxification of drugs
Correct Answer: C
Rationale: The RER, studded with ribosomes, synthesizes
proteins destined for secretion or membrane insertion.
Section Reference: 1.2 Cellular Functions
Section 1.3 Structure and Function of Cellular Components
1.3.1 Plasma Membrane
9. Which lipid is most abundant in the plasma membrane
and contributes to its fluidity?
A. Cholesterol
B. Phospholipids
C. Glycolipids
D. Triglycerides
Correct Answer: B
Rationale: Phospholipids form the bilayer structure and
determine membrane fluidity.
Section Reference: 1.3.1 Plasma Membrane
10. Glycolipids in the plasma membrane primarily
function to:
A. Provide rigidity
B. Serve as recognition sites
C. Generate ATP
D. Transport ions
Correct Answer: B
, Rationale: Glycolipids on the outer membrane surface
participate in cell recognition and signaling.
Section Reference: 1.3.1 Plasma Membrane
1.3.2 Cytoplasmic Organelles
11. Which organelle is responsible for detoxification of
chemicals and lipid synthesis?
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale: The smooth ER lacks ribosomes and functions in
lipid metabolism and detoxification.
Section Reference: 1.3.2 Cytoplasmic Organelles
12. The Golgi apparatus is primarily involved in:
A. ATP production
B. Protein modification and packaging
C. DNA replication
D. Lipid degradation
Correct Answer: B
Rationale: Proteins from the RER are modified, sorted, and
packaged in the Golgi for secretion.
Section Reference: 1.3.2 Cytoplasmic Organelles
13. What is the main function of peroxisomes?
A. Synthesis of cholesterol
B. Beta-oxidation of very long chain fatty acids
, C. Protein synthesis
D. Glycogen storage
Correct Answer: B
Rationale: Peroxisomes break down very long chain fatty
acids via β-oxidation.
Section Reference: 1.3.2 Cytoplasmic Organelles
14. Which of the following organelles contains its own
DNA?
A. Lysosomes
B. Mitochondria
C. Peroxisomes
D. Endosomes
Correct Answer: B
Rationale: Mitochondria have circular DNA and replicate
independently of the nucleus.
Section Reference: 1.3.2 Cytoplasmic Organelles
1.3.3 Cytoskeleton
15. Microtubules are composed of which protein?
A. Actin
B. Tubulin
C. Keratin
D. Myosin
Correct Answer: B
Rationale: Tubulin monomers assemble into hollow
microtubules for structural support and transport.
Section Reference: 1.3.3 Cytoskeleton
, 16. Actin filaments primarily contribute to:
A. Vesicle formation
B. Muscle contraction and cell motility
C. Chromosome separation
D. DNA transcription
Correct Answer: B
Rationale: Actin filaments enable cell shape changes,
motility, and muscle contraction through interactions with
myosin.
Section Reference: 1.3.3 Cytoskeleton
17. Intermediate filaments function mainly to:
A. Facilitate intracellular transport
B. Provide tensile strength to cells
C. Drive cytokinesis
D. Synthesize proteins
Correct Answer: B
Rationale: Intermediate filaments resist mechanical stress,
maintaining cell integrity.
Section Reference: 1.3.3 Cytoskeleton
1.3.4 Nucleus and DNA/RNA Synthesis
18. Which enzyme is responsible for DNA replication in
the nucleus?
A. RNA polymerase II
B. DNA ligase
C. DNA polymerase
D. Reverse transcriptase
