NURS 6501 – Advanced Pathophysiology
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Question 1
Which organelle is primarily responsible for producing ATP in a cell?
A. Nucleus
B. Mitochondrion
C. Ribosome
D. Golgi apparatus
Correct Answer: B
Rationale:
Mitochondria produce ATP through oxidative phosphorylation, providing energy
for cellular activities. The nucleus stores genetic material, ribosomes synthesize
proteins, and the Golgi apparatus modifies and packages proteins.
Question 2
Which cellular process moves water across a semipermeable membrane?
A. Diffusion
B. Active transport
C. Osmosis
D. Endocytosis
,Correct Answer: C
Rationale:
Osmosis is the movement of water across a semipermeable membrane from an
area of lower solute concentration to higher solute concentration. Diffusion
moves solutes, active transport requires energy, and endocytosis involves
engulfing substances into the cell.
Question 3
Which electrolyte is the major intracellular cation?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
Correct Answer: B
Rationale:
Potassium is the principal intracellular cation and is essential for maintaining
resting membrane potential. Sodium is the major extracellular cation, chloride is
the primary extracellular anion, and calcium has important signaling functions.
Question 4
Which electrolyte is the major extracellular cation?
A. Potassium
B. Magnesium
C. Sodium
D. Phosphate
Correct Answer: C
Rationale:
Sodium is the predominant extracellular cation and is vital for fluid balance and
nerve conduction.
,Question 5
Which type of cellular adaptation involves an increase in cell size?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Correct Answer: B
Rationale:
Hypertrophy is an increase in cell size without increasing cell number. Hyperplasia
increases cell number, metaplasia is replacement by another mature cell type,
and dysplasia is abnormal cellular growth.
Question 6
Hyperplasia is best defined as:
A. Increased cell size
B. Increased cell number
C. Cell death
D. Cell shrinkage
Correct Answer: B
Rationale:
Hyperplasia results from an increase in the number of cells due to cell division.
Question 7
Atrophy refers to:
A. Increased cell size
B. Increased cell number
, C. Decreased cell size
D. Abnormal cell growth
Correct Answer: C
Rationale:
Atrophy is a reduction in cell size that leads to decreased organ size and function.
Question 8
Apoptosis is best described as:
A. Accidental cell death
B. Programmed cell death
C. Cellular swelling only
D. Tissue inflammation
Correct Answer: B
Rationale:
Apoptosis is a regulated process of programmed cell death that removes
damaged or unnecessary cells without causing inflammation.
Question 9
Necrosis typically results in:
A. No inflammation
B. Cell regeneration only
C. Inflammation of surrounding tissue
D. Increased ATP production
Correct Answer: C
Rationale:
Necrosis is uncontrolled cell death that releases cellular contents and triggers
inflammation.
Certification Exam Questions and
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
Question 1
Which organelle is primarily responsible for producing ATP in a cell?
A. Nucleus
B. Mitochondrion
C. Ribosome
D. Golgi apparatus
Correct Answer: B
Rationale:
Mitochondria produce ATP through oxidative phosphorylation, providing energy
for cellular activities. The nucleus stores genetic material, ribosomes synthesize
proteins, and the Golgi apparatus modifies and packages proteins.
Question 2
Which cellular process moves water across a semipermeable membrane?
A. Diffusion
B. Active transport
C. Osmosis
D. Endocytosis
,Correct Answer: C
Rationale:
Osmosis is the movement of water across a semipermeable membrane from an
area of lower solute concentration to higher solute concentration. Diffusion
moves solutes, active transport requires energy, and endocytosis involves
engulfing substances into the cell.
Question 3
Which electrolyte is the major intracellular cation?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
Correct Answer: B
Rationale:
Potassium is the principal intracellular cation and is essential for maintaining
resting membrane potential. Sodium is the major extracellular cation, chloride is
the primary extracellular anion, and calcium has important signaling functions.
Question 4
Which electrolyte is the major extracellular cation?
A. Potassium
B. Magnesium
C. Sodium
D. Phosphate
Correct Answer: C
Rationale:
Sodium is the predominant extracellular cation and is vital for fluid balance and
nerve conduction.
,Question 5
Which type of cellular adaptation involves an increase in cell size?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Correct Answer: B
Rationale:
Hypertrophy is an increase in cell size without increasing cell number. Hyperplasia
increases cell number, metaplasia is replacement by another mature cell type,
and dysplasia is abnormal cellular growth.
Question 6
Hyperplasia is best defined as:
A. Increased cell size
B. Increased cell number
C. Cell death
D. Cell shrinkage
Correct Answer: B
Rationale:
Hyperplasia results from an increase in the number of cells due to cell division.
Question 7
Atrophy refers to:
A. Increased cell size
B. Increased cell number
, C. Decreased cell size
D. Abnormal cell growth
Correct Answer: C
Rationale:
Atrophy is a reduction in cell size that leads to decreased organ size and function.
Question 8
Apoptosis is best described as:
A. Accidental cell death
B. Programmed cell death
C. Cellular swelling only
D. Tissue inflammation
Correct Answer: B
Rationale:
Apoptosis is a regulated process of programmed cell death that removes
damaged or unnecessary cells without causing inflammation.
Question 9
Necrosis typically results in:
A. No inflammation
B. Cell regeneration only
C. Inflammation of surrounding tissue
D. Increased ATP production
Correct Answer: C
Rationale:
Necrosis is uncontrolled cell death that releases cellular contents and triggers
inflammation.
