COMPREHENSIVE TEST BANK LATEST EDITION
Multiple-Choice Questions with Correct Answers & Detailed Rationales
Based on Official Course Materials & Past Exams and Quizzes
Cellular Biology · Genetics · Immunity · Fluid & Electrolytes · Acid-Base
Cardiovascular · Neurology · Endocrine · Renal
NUR-631
ADVANCED PATHOPHYSIOLOGY
Practice Question Bank
Exam-Style Multiple Choice with Rationales
GRAND CANYON UNIVERSITY
Cell structure, adaptation, injury & death
Genetics, chromosomes & inherited disorders
Innate & adaptive immunity; hypersensitivity
Fluid, electrolyte & acid–base balance
Cardiac structure, flow, failure & CAD
Neurologic function, pain & psychiatric patho
Endocrine axes, diabetes & thyroid disorders
Renal function, AKI, CKD & RAAS
GRADUATE NURSING · NURSE PRACTITIONER PREPARATION
Aligned with GCU NUR-631 course materials, quizzes, and exams
HIGH-QUALITY · CLINICALLY FOCUSED
,NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
Section 1: Cellular Biology, Injury & Adaptation
1. The nucleus is the largest membrane-bound organelle in most human cells. Where is the majority of the cell’s
genetic information stored, and why does this location matter for gene regulation?
A. In ribosomes, because protein synthesis requires DNA templates in the cytosol
B. In the nucleus, which houses chromosomal DNA and coordinates gene expression
C. In lysosomes, which package DNA for export
D. Only in the plasma membrane lipid bilayer
Correct Answer: B
Rationale:
Chromosomal DNA resides in the nucleus; the nucleolus contributes ribosomal components.
Mitochondria hold a small amount of DNA but are not the primary genetic repository.
2. Apoptosis is an energy-dependent process that removes damaged or unnecessary cells. How does apoptosis
differ from necrosis in its effect on surrounding tissue?
A. Apoptosis always causes massive inflammation while necrosis does not
B. Apoptosis is orderly and typically non-inflammatory, whereas necrosis involves membrane rupture and
inflammation
C. Both processes are identical and always reversible
D. Necrosis requires caspases while apoptosis does not
Correct Answer: B
Rationale:
Apoptotic cells are cleared by phagocytes without spilling contents.
Necrosis releases damage-associated signals that recruit inflammatory cells.
3. When cellular metabolic pathways fail, intermediate metabolites and waste products build up. What is the
most direct consequence of impaired cellular metabolism in this context?
A. Immediate unlimited ATP surplus
B. Accumulation of waste products that can further injure the cell
C. Permanent conversion of all cells to stem cells
D. Exclusive increase in nuclear DNA content
Correct Answer: B
Rationale:
Failed pathways leave toxic or osmotic intermediates inside the cell.
This pattern is central to metabolic and hypoxic injury.
4. Mitochondria are double-membrane organelles with their own DNA. What is their primary physiologic role in
aerobic cells?
A. Protein synthesis from mRNA exclusively
B. ATP production through oxidative phosphorylation and cellular respiration
Page 2
,NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
C. Digestion of pathogens only
D. Formation of the mitotic spindle alone
Correct Answer: B
Rationale:
Most ATP under aerobic conditions comes from the electron transport chain and chemiosmosis.
Mitochondrial failure rapidly compromises energy-dependent functions.
5. Lysosomes originate from the Golgi complex and contain hydrolytic enzymes. What is their main function
within the cell?
A. Long-term storage of chromosomal DNA
B. Digestion of cellular waste, debris, and some pathogens
C. Synthesis of steroid hormones only
D. Generation of action potentials
Correct Answer: B
Rationale:
They act as the cell’s recycling and defense system against internalized material.
Dysfunction contributes to storage diseases and impaired autophagy.
6. Ribosomes may be free in the cytosol or bound to rough endoplasmic reticulum. What process occurs on
ribosomes?
A. ATP synthesis via chemiosmosis
B. Translation of mRNA into polypeptides (protein synthesis)
C. Replication of nuclear DNA only
D. Packaging of lipids for export exclusively
Correct Answer: B
Rationale:
tRNA and ribosomal RNA cooperate to assemble amino acids in sequence.
Rough ER-bound ribosomes feed proteins into the secretory pathway.
7. Atrophy is an adaptive response to reduced workload, blood supply, or nutrition. Which statement correctly
defines atrophy?
A. Increase in cell number only
B. Decrease or shrinkage in cellular size
C. Replacement of one cell type by another
D. Uncontrolled increase in cell size and number together
Correct Answer: B
Rationale:
Organs can shrink when many cells atrophy, as in disuse of skeletal muscle.
The process may be physiologic or pathologic.
Page 3
, NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
8. Hypertrophy occurs when cells enlarge without a necessary increase in cell number. In which clinical setting is
pathologic hypertrophy most classic?
A. Partial hepatectomy with regenerating hepatocytes
B. Left ventricular wall thickening from chronic hypertension
C. Squamous change in bronchial epithelium of smokers
D. Programmed deletion of webbing between digits in the embryo
Correct Answer: B
Rationale:
Pressure overload stimulates myocyte hypertrophy.
Long-standing hypertrophy can progress to heart failure.
9. Hyperplasia is an increase in cell number and requires cells capable of division. Which example best illustrates
compensatory hyperplasia?
A. Left ventricular thickening from aortic stenosis
B. Regeneration of remaining hepatocytes after partial liver resection
C. Caseous necrosis in a granuloma
D. Apoptosis of neutrophils after acute infection
Correct Answer: B
Rationale:
The liver is a classic organ that restores mass by hyperplasia.
Not all tissues can mount this response equally.
10. Metaplasia is reversible replacement of one mature cell type by another. Which clinical example is most often
cited in pathophysiology courses?
A. Myocardial infarction with coagulative necrosis
B. Squamous metaplasia of respiratory epithelium in chronic smokers
C. Absolute insulin deficiency in type 1 diabetes
D. Peaked T waves from hyperkalemia
Correct Answer: B
Rationale:
Chronic irritation drives adaptive cell-type change.
If the stimulus continues, dysplasia and cancer risk may increase.
11. The plasma membrane follows the fluid mosaic model. How is it structured, and what does selective
permeability allow?
A. A rigid cellulose wall that blocks all transport
B. A phospholipid bilayer with embedded proteins that controls entry and exit of substances
C. A single carbohydrate sheet without proteins
D. An impermeable protein crystal lattice
Page 4
Multiple-Choice Questions with Correct Answers & Detailed Rationales
Based on Official Course Materials & Past Exams and Quizzes
Cellular Biology · Genetics · Immunity · Fluid & Electrolytes · Acid-Base
Cardiovascular · Neurology · Endocrine · Renal
NUR-631
ADVANCED PATHOPHYSIOLOGY
Practice Question Bank
Exam-Style Multiple Choice with Rationales
GRAND CANYON UNIVERSITY
Cell structure, adaptation, injury & death
Genetics, chromosomes & inherited disorders
Innate & adaptive immunity; hypersensitivity
Fluid, electrolyte & acid–base balance
Cardiac structure, flow, failure & CAD
Neurologic function, pain & psychiatric patho
Endocrine axes, diabetes & thyroid disorders
Renal function, AKI, CKD & RAAS
GRADUATE NURSING · NURSE PRACTITIONER PREPARATION
Aligned with GCU NUR-631 course materials, quizzes, and exams
HIGH-QUALITY · CLINICALLY FOCUSED
,NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
Section 1: Cellular Biology, Injury & Adaptation
1. The nucleus is the largest membrane-bound organelle in most human cells. Where is the majority of the cell’s
genetic information stored, and why does this location matter for gene regulation?
A. In ribosomes, because protein synthesis requires DNA templates in the cytosol
B. In the nucleus, which houses chromosomal DNA and coordinates gene expression
C. In lysosomes, which package DNA for export
D. Only in the plasma membrane lipid bilayer
Correct Answer: B
Rationale:
Chromosomal DNA resides in the nucleus; the nucleolus contributes ribosomal components.
Mitochondria hold a small amount of DNA but are not the primary genetic repository.
2. Apoptosis is an energy-dependent process that removes damaged or unnecessary cells. How does apoptosis
differ from necrosis in its effect on surrounding tissue?
A. Apoptosis always causes massive inflammation while necrosis does not
B. Apoptosis is orderly and typically non-inflammatory, whereas necrosis involves membrane rupture and
inflammation
C. Both processes are identical and always reversible
D. Necrosis requires caspases while apoptosis does not
Correct Answer: B
Rationale:
Apoptotic cells are cleared by phagocytes without spilling contents.
Necrosis releases damage-associated signals that recruit inflammatory cells.
3. When cellular metabolic pathways fail, intermediate metabolites and waste products build up. What is the
most direct consequence of impaired cellular metabolism in this context?
A. Immediate unlimited ATP surplus
B. Accumulation of waste products that can further injure the cell
C. Permanent conversion of all cells to stem cells
D. Exclusive increase in nuclear DNA content
Correct Answer: B
Rationale:
Failed pathways leave toxic or osmotic intermediates inside the cell.
This pattern is central to metabolic and hypoxic injury.
4. Mitochondria are double-membrane organelles with their own DNA. What is their primary physiologic role in
aerobic cells?
A. Protein synthesis from mRNA exclusively
B. ATP production through oxidative phosphorylation and cellular respiration
Page 2
,NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
C. Digestion of pathogens only
D. Formation of the mitotic spindle alone
Correct Answer: B
Rationale:
Most ATP under aerobic conditions comes from the electron transport chain and chemiosmosis.
Mitochondrial failure rapidly compromises energy-dependent functions.
5. Lysosomes originate from the Golgi complex and contain hydrolytic enzymes. What is their main function
within the cell?
A. Long-term storage of chromosomal DNA
B. Digestion of cellular waste, debris, and some pathogens
C. Synthesis of steroid hormones only
D. Generation of action potentials
Correct Answer: B
Rationale:
They act as the cell’s recycling and defense system against internalized material.
Dysfunction contributes to storage diseases and impaired autophagy.
6. Ribosomes may be free in the cytosol or bound to rough endoplasmic reticulum. What process occurs on
ribosomes?
A. ATP synthesis via chemiosmosis
B. Translation of mRNA into polypeptides (protein synthesis)
C. Replication of nuclear DNA only
D. Packaging of lipids for export exclusively
Correct Answer: B
Rationale:
tRNA and ribosomal RNA cooperate to assemble amino acids in sequence.
Rough ER-bound ribosomes feed proteins into the secretory pathway.
7. Atrophy is an adaptive response to reduced workload, blood supply, or nutrition. Which statement correctly
defines atrophy?
A. Increase in cell number only
B. Decrease or shrinkage in cellular size
C. Replacement of one cell type by another
D. Uncontrolled increase in cell size and number together
Correct Answer: B
Rationale:
Organs can shrink when many cells atrophy, as in disuse of skeletal muscle.
The process may be physiologic or pathologic.
Page 3
, NUR-631 Advanced Pathophysiology | GCU Practice Bank Grand Canyon University
8. Hypertrophy occurs when cells enlarge without a necessary increase in cell number. In which clinical setting is
pathologic hypertrophy most classic?
A. Partial hepatectomy with regenerating hepatocytes
B. Left ventricular wall thickening from chronic hypertension
C. Squamous change in bronchial epithelium of smokers
D. Programmed deletion of webbing between digits in the embryo
Correct Answer: B
Rationale:
Pressure overload stimulates myocyte hypertrophy.
Long-standing hypertrophy can progress to heart failure.
9. Hyperplasia is an increase in cell number and requires cells capable of division. Which example best illustrates
compensatory hyperplasia?
A. Left ventricular thickening from aortic stenosis
B. Regeneration of remaining hepatocytes after partial liver resection
C. Caseous necrosis in a granuloma
D. Apoptosis of neutrophils after acute infection
Correct Answer: B
Rationale:
The liver is a classic organ that restores mass by hyperplasia.
Not all tissues can mount this response equally.
10. Metaplasia is reversible replacement of one mature cell type by another. Which clinical example is most often
cited in pathophysiology courses?
A. Myocardial infarction with coagulative necrosis
B. Squamous metaplasia of respiratory epithelium in chronic smokers
C. Absolute insulin deficiency in type 1 diabetes
D. Peaked T waves from hyperkalemia
Correct Answer: B
Rationale:
Chronic irritation drives adaptive cell-type change.
If the stimulus continues, dysplasia and cancer risk may increase.
11. The plasma membrane follows the fluid mosaic model. How is it structured, and what does selective
permeability allow?
A. A rigid cellulose wall that blocks all transport
B. A phospholipid bilayer with embedded proteins that controls entry and exit of substances
C. A single carbohydrate sheet without proteins
D. An impermeable protein crystal lattice
Page 4
