McCance & Huether’s Pathophysiology
The Biologic Basis for Disease in Adults
and Children
9th Edition
Author(s)Julia Rogers
TEST BANK
Q1. A researcher compares two cell populations obtained
from different tissue cultures. One population lacks
membrane-bound organelles and reproduces by binary
, fission, whereas the other demonstrates
compartmentalized intracellular processing and linear
chromosomal replication. The distinguishing feature most
directly responsible for the increased functional
specialization of the second population is:
A. Presence of peptidoglycan within the cell wall
B. Compartmentalization by membrane-bound organelles
C. Dependence on anaerobic glycolysis for ATP generation
D. Absence of histone-associated DNA organization
Correct Answer: B
Rationale:
• Clinical Clue: Functional specialization requires
intracellular segregation of biochemical tasks.
• Mechanism: Eukaryotic cells contain membrane-bound
organelles that isolate metabolic and synthetic processes,
increasing efficiency and regulation.
• Why the Correct Answer Is Right: Organelle
compartmentalization allows simultaneous yet distinct
cellular activities such as protein synthesis, detoxification,
and ATP production.
• Why the Other Options Are Wrong:
o A: Peptidoglycan is characteristic of bacterial cell
walls, not eukaryotic specialization.
, o C: Anaerobic glycolysis is not the defining feature of
complex cellular organization.
o D: Eukaryotic DNA is associated with histones rather
than lacking them.
• Exam Trap: Confusing nuclear presence alone with the
broader concept of intracellular compartmentalization.
• High-Yield Clinical Correlation: Mitochondrial and
lysosomal disorders primarily affect highly specialized
eukaryotic tissues.
• Memory Anchor: “Organelles create specialization.”
Q2. A patient with chronic alcohol exposure develops
hepatocellular dysfunction characterized by impaired
detoxification and lipid accumulation. Ultrastructural
analysis would most likely reveal dysfunction of which
cellular component?
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale:
• Clinical Clue: Detoxification and lipid metabolism are
impaired.
, • Mechanism: The smooth endoplasmic reticulum (SER)
participates in lipid synthesis and xenobiotic detoxification
through cytochrome P450 enzymes.
• Why the Correct Answer Is Right: Chronic alcohol exposure
induces SER proliferation, but persistent injury impairs its
metabolic functions.
• Why the Other Options Are Wrong:
o A: Rough ER primarily synthesizes secretory and
membrane proteins.
o C: Golgi apparatus modifies and packages proteins.
o D: Lysosomes degrade intracellular debris.
• Exam Trap: Associating all protein-processing injury with
rough ER dysfunction.
• High-Yield Clinical Correlation: Hepatic SER hypertrophy
also occurs with barbiturate exposure.
• Memory Anchor: “Smooth ER handles smooth chemicals
and fats.”
Q3. A child with recurrent respiratory infections is found to
have dysfunctional dynein arms within respiratory
epithelial cells. The impaired movement of which cellular
structure best explains this patient’s symptoms?
The Biologic Basis for Disease in Adults
and Children
9th Edition
Author(s)Julia Rogers
TEST BANK
Q1. A researcher compares two cell populations obtained
from different tissue cultures. One population lacks
membrane-bound organelles and reproduces by binary
, fission, whereas the other demonstrates
compartmentalized intracellular processing and linear
chromosomal replication. The distinguishing feature most
directly responsible for the increased functional
specialization of the second population is:
A. Presence of peptidoglycan within the cell wall
B. Compartmentalization by membrane-bound organelles
C. Dependence on anaerobic glycolysis for ATP generation
D. Absence of histone-associated DNA organization
Correct Answer: B
Rationale:
• Clinical Clue: Functional specialization requires
intracellular segregation of biochemical tasks.
• Mechanism: Eukaryotic cells contain membrane-bound
organelles that isolate metabolic and synthetic processes,
increasing efficiency and regulation.
• Why the Correct Answer Is Right: Organelle
compartmentalization allows simultaneous yet distinct
cellular activities such as protein synthesis, detoxification,
and ATP production.
• Why the Other Options Are Wrong:
o A: Peptidoglycan is characteristic of bacterial cell
walls, not eukaryotic specialization.
, o C: Anaerobic glycolysis is not the defining feature of
complex cellular organization.
o D: Eukaryotic DNA is associated with histones rather
than lacking them.
• Exam Trap: Confusing nuclear presence alone with the
broader concept of intracellular compartmentalization.
• High-Yield Clinical Correlation: Mitochondrial and
lysosomal disorders primarily affect highly specialized
eukaryotic tissues.
• Memory Anchor: “Organelles create specialization.”
Q2. A patient with chronic alcohol exposure develops
hepatocellular dysfunction characterized by impaired
detoxification and lipid accumulation. Ultrastructural
analysis would most likely reveal dysfunction of which
cellular component?
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
C. Golgi apparatus
D. Lysosome
Correct Answer: B
Rationale:
• Clinical Clue: Detoxification and lipid metabolism are
impaired.
, • Mechanism: The smooth endoplasmic reticulum (SER)
participates in lipid synthesis and xenobiotic detoxification
through cytochrome P450 enzymes.
• Why the Correct Answer Is Right: Chronic alcohol exposure
induces SER proliferation, but persistent injury impairs its
metabolic functions.
• Why the Other Options Are Wrong:
o A: Rough ER primarily synthesizes secretory and
membrane proteins.
o C: Golgi apparatus modifies and packages proteins.
o D: Lysosomes degrade intracellular debris.
• Exam Trap: Associating all protein-processing injury with
rough ER dysfunction.
• High-Yield Clinical Correlation: Hepatic SER hypertrophy
also occurs with barbiturate exposure.
• Memory Anchor: “Smooth ER handles smooth chemicals
and fats.”
Q3. A child with recurrent respiratory infections is found to
have dysfunctional dynein arms within respiratory
epithelial cells. The impaired movement of which cellular
structure best explains this patient’s symptoms?
