PATH 370 - In Class Quiz 1 (Ch. 1, 2, 4, 7)
Exam 2026 Questions and Answers (2026 /
2027) (Verified Answers)
• This comprehensive 200-question quiz covers PATH 370 Chapters 1, 2, 4, and 7,
testing foundational and advanced concepts in cellular pathophysiology,
adaptation, inflammation, and genetic disorders.
• Use this material to identify knowledge gaps, reinforce key concepts through
detailed rationales, and build confidence for comprehensive exams—study the
rationales as thoroughly as the questions themselves.
1. Which of the following best describes homeostasis in the context of
pathophysiology?
A) The permanent state of equilibrium maintained by the body regardless of
external changes
B) A dynamic process where the body maintains relatively stable internal conditions
through physiological regulation
C) A fixed condition of the internal environment that never changes
D) The process by which cells divide to replace damaged tissues
E) The mechanism by which toxins are expelled from the body
✓ B) A dynamic process where the body maintains relatively stable internal
conditions through physiological regulation
Homeostasis is not a fixed state but a dynamic balance maintained through
regulatory mechanisms. The body constantly adjusts physiological variables
(temperature, pH, electrolytes, glucose) within narrow ranges despite external
environmental changes. This requires continuous monitoring and adjustment
through negative feedback systems, not a permanent unchanging state.
2. Which cellular structure is primarily responsible for ATP production in
eukaryotic cells?
,A) Ribosome
B) Golgi apparatus
C) Mitochondria
D) Smooth endoplasmic reticulum
E) Nucleus
✓ C) Mitochondria
Mitochondria are the powerhouses of the cell, containing the enzymes and electron
transport chain necessary for oxidative phosphorylation and ATP synthesis. While
ribosomes synthesize proteins, the Golgi processes proteins, and the rough ER
synthesizes membrane proteins, none of these are primarily responsible for energy
production.
3. In cellular adaptation, hypertrophy differs from hyperplasia in that
hypertrophy involves:
A) Increase in the number of cells
B) Increase in the size of individual cells
C) Programmed cell death
D) Loss of specialized function
E) Transformation of cell type
✓ B) Increase in the size of individual cells
Hypertrophy is an increase in cell size without an increase in cell number, often
seen in response to increased functional demand (e.g., cardiac myocytes in
athletes). Hyperplasia, conversely, involves an increase in the number of cells. Both
are adaptive responses but involve different mechanisms.
4. Which of the following conditions represents reversible cellular injury?
,A) Myocardial infarction with necrosis
B) Fatty infiltration of hepatocytes due to alcohol exposure
C) Transection of a peripheral nerve
D) Pulmonary fibrosis
E) Melanoma development
✓ B) Fatty infiltration of hepatocytes due to alcohol exposure
Fatty infiltration (steatosis) is a reversible cellular injury that can resolve if the
causative agent (alcohol) is removed. The accumulation of triglycerides in
hepatocytes does not cause permanent damage if intervention occurs early. In
contrast, myocardial infarction causes irreversible necrosis, nerve transection
causes permanent damage, pulmonary fibrosis is irreversible scarring, and
melanoma is neoplastic transformation.
5. Apoptosis differs from necrosis primarily in which aspect?
A) Apoptosis involves inflammatory response; necrosis does not
B) Apoptosis is programmed cell death; necrosis is uncontrolled injury-induced
death
C) Apoptosis causes scarring; necrosis does not
D) Apoptosis occurs only in cancerous cells
E) Necrosis requires less energy than apoptosis
✓ B) Apoptosis is programmed cell death; necrosis is uncontrolled injury-
induced death
Apoptosis is an orderly, energy-dependent, genetically programmed process of cell
death that prevents inflammation and tissue damage. Necrosis is uncontrolled cell
death resulting from severe injury (hypoxia, trauma, toxins), which triggers
inflammatory response and can lead to tissue damage. This fundamental
distinction in mechanism and consequences is the primary difference.
, 6. Which organelle is responsible for packaging and modifying proteins for
transport?
A) Rough endoplasmic reticulum
B) Ribosomes
C) Golgi apparatus
D) Lysosomes
E) Centrosome
✓ C) Golgi apparatus
The Golgi apparatus (Golgi complex) receives proteins synthesized by the rough
endoplasmic reticulum, modifies them through glycosylation and phosphorylation,
sorts them, and packages them into vesicles for transport to their final destinations.
The rough ER synthesizes the proteins, ribosomes are the site of synthesis,
lysosomes contain digestive enzymes, and centrosomes organize microtubules.
7. In the context of pathophysiology, what does ischemia refer to?
A) Complete absence of blood flow to a tissue
B) Inadequate blood flow to meet the metabolic needs of tissue
C) Excessive accumulation of blood in a tissue
D) Inflammation of blood vessels
E) Abnormal cell proliferation
✓ B) Inadequate blood flow to meet the metabolic needs of tissue
Ischemia is insufficient blood supply to a tissue, which may result in partial or
complete reduction in oxygen and nutrient delivery. While total cessation of blood
flow (infarction) is severe ischemia, ischemia itself describes any inadequacy
between blood supply and tissue demand. Excessive blood accumulation is
Exam 2026 Questions and Answers (2026 /
2027) (Verified Answers)
• This comprehensive 200-question quiz covers PATH 370 Chapters 1, 2, 4, and 7,
testing foundational and advanced concepts in cellular pathophysiology,
adaptation, inflammation, and genetic disorders.
• Use this material to identify knowledge gaps, reinforce key concepts through
detailed rationales, and build confidence for comprehensive exams—study the
rationales as thoroughly as the questions themselves.
1. Which of the following best describes homeostasis in the context of
pathophysiology?
A) The permanent state of equilibrium maintained by the body regardless of
external changes
B) A dynamic process where the body maintains relatively stable internal conditions
through physiological regulation
C) A fixed condition of the internal environment that never changes
D) The process by which cells divide to replace damaged tissues
E) The mechanism by which toxins are expelled from the body
✓ B) A dynamic process where the body maintains relatively stable internal
conditions through physiological regulation
Homeostasis is not a fixed state but a dynamic balance maintained through
regulatory mechanisms. The body constantly adjusts physiological variables
(temperature, pH, electrolytes, glucose) within narrow ranges despite external
environmental changes. This requires continuous monitoring and adjustment
through negative feedback systems, not a permanent unchanging state.
2. Which cellular structure is primarily responsible for ATP production in
eukaryotic cells?
,A) Ribosome
B) Golgi apparatus
C) Mitochondria
D) Smooth endoplasmic reticulum
E) Nucleus
✓ C) Mitochondria
Mitochondria are the powerhouses of the cell, containing the enzymes and electron
transport chain necessary for oxidative phosphorylation and ATP synthesis. While
ribosomes synthesize proteins, the Golgi processes proteins, and the rough ER
synthesizes membrane proteins, none of these are primarily responsible for energy
production.
3. In cellular adaptation, hypertrophy differs from hyperplasia in that
hypertrophy involves:
A) Increase in the number of cells
B) Increase in the size of individual cells
C) Programmed cell death
D) Loss of specialized function
E) Transformation of cell type
✓ B) Increase in the size of individual cells
Hypertrophy is an increase in cell size without an increase in cell number, often
seen in response to increased functional demand (e.g., cardiac myocytes in
athletes). Hyperplasia, conversely, involves an increase in the number of cells. Both
are adaptive responses but involve different mechanisms.
4. Which of the following conditions represents reversible cellular injury?
,A) Myocardial infarction with necrosis
B) Fatty infiltration of hepatocytes due to alcohol exposure
C) Transection of a peripheral nerve
D) Pulmonary fibrosis
E) Melanoma development
✓ B) Fatty infiltration of hepatocytes due to alcohol exposure
Fatty infiltration (steatosis) is a reversible cellular injury that can resolve if the
causative agent (alcohol) is removed. The accumulation of triglycerides in
hepatocytes does not cause permanent damage if intervention occurs early. In
contrast, myocardial infarction causes irreversible necrosis, nerve transection
causes permanent damage, pulmonary fibrosis is irreversible scarring, and
melanoma is neoplastic transformation.
5. Apoptosis differs from necrosis primarily in which aspect?
A) Apoptosis involves inflammatory response; necrosis does not
B) Apoptosis is programmed cell death; necrosis is uncontrolled injury-induced
death
C) Apoptosis causes scarring; necrosis does not
D) Apoptosis occurs only in cancerous cells
E) Necrosis requires less energy than apoptosis
✓ B) Apoptosis is programmed cell death; necrosis is uncontrolled injury-
induced death
Apoptosis is an orderly, energy-dependent, genetically programmed process of cell
death that prevents inflammation and tissue damage. Necrosis is uncontrolled cell
death resulting from severe injury (hypoxia, trauma, toxins), which triggers
inflammatory response and can lead to tissue damage. This fundamental
distinction in mechanism and consequences is the primary difference.
, 6. Which organelle is responsible for packaging and modifying proteins for
transport?
A) Rough endoplasmic reticulum
B) Ribosomes
C) Golgi apparatus
D) Lysosomes
E) Centrosome
✓ C) Golgi apparatus
The Golgi apparatus (Golgi complex) receives proteins synthesized by the rough
endoplasmic reticulum, modifies them through glycosylation and phosphorylation,
sorts them, and packages them into vesicles for transport to their final destinations.
The rough ER synthesizes the proteins, ribosomes are the site of synthesis,
lysosomes contain digestive enzymes, and centrosomes organize microtubules.
7. In the context of pathophysiology, what does ischemia refer to?
A) Complete absence of blood flow to a tissue
B) Inadequate blood flow to meet the metabolic needs of tissue
C) Excessive accumulation of blood in a tissue
D) Inflammation of blood vessels
E) Abnormal cell proliferation
✓ B) Inadequate blood flow to meet the metabolic needs of tissue
Ischemia is insufficient blood supply to a tissue, which may result in partial or
complete reduction in oxygen and nutrient delivery. While total cessation of blood
flow (infarction) is severe ischemia, ischemia itself describes any inadequacy
between blood supply and tissue demand. Excessive blood accumulation is
