UNDERSTANDING PATHOPHYSIOLOGY 6TH
EDITION – FULL TEST BANK CHAPTERS 1-42 |
HUETHER & MCCANCE | VERIFIED QUESTIONS
& ANSWERS 2026
UNDERSTANDING PATHOPHYSIOLOGY 6E — TEST BANK
Huether & McCance | Chapters 1–42 | Verified Q&A with RATIONALEs
CHAPTER 1: Cellular Biology
Q1. Which organelle is primarily responsible for ATP production in eukaryotic cells?
• A. Nucleus
• B. Mitochondria
• C. Golgi apparatus
• D. Endoplasmic reticulum
RATIONALE: Mitochondria are the 'powerhouses' of the cell, generating ATP
through oxidative phosphorylation via the electron transport chain and the citric acid cycle.
Q2. The sodium-potassium pump (Na⁺/K⁺-ATPase) moves ions against their concentration
gradient. This is an example of:
• A. Passive diffusion
• B. Facilitated diffusion
• C. Active transport
• D. Osmosis
RATIONALE: Active transport requires energy (ATP) to move substances against
their concentration gradient. The Na⁺/K⁺-ATPase pumps 3 Na⁺ out and 2 K⁺ in per ATP molecule
consumed.
Q3. A cell placed in a hypertonic solution will:
, • A. Swell due to water influx
• B. Remain unchanged
• C. Shrink due to water efflux
• D. Burst due to osmotic pressure
RATIONALE: In a hypertonic solution, the extracellular solute concentration is
higher than intracellular. Water moves out of the cell by osmosis, causing it to shrink (crenation).
Q4. Which phase of the cell cycle involves DNA replication?
• A. G1 phase
• B. S phase
• C. G2 phase
• D. M phase
RATIONALE: DNA replication occurs during the S (synthesis) phase of the cell
cycle, resulting in duplication of the genetic material before mitosis.
Q5. Receptor-mediated endocytosis involves:
• A. Passive movement of ligands into the cell
• B. Specific binding of ligands to cell-surface receptors before internalization
• C. Non-specific engulfment of extracellular material
• D. Exocytosis of cellular products
RATIONALE: Receptor-mediated endocytosis is a highly specific process where
ligands bind to cell-surface receptors, triggering clathrin-coated pit formation and internalization
of the ligand-receptor complex.
CHAPTER 2: Altered Cellular and Tissue Biology
EDITION – FULL TEST BANK CHAPTERS 1-42 |
HUETHER & MCCANCE | VERIFIED QUESTIONS
& ANSWERS 2026
UNDERSTANDING PATHOPHYSIOLOGY 6E — TEST BANK
Huether & McCance | Chapters 1–42 | Verified Q&A with RATIONALEs
CHAPTER 1: Cellular Biology
Q1. Which organelle is primarily responsible for ATP production in eukaryotic cells?
• A. Nucleus
• B. Mitochondria
• C. Golgi apparatus
• D. Endoplasmic reticulum
RATIONALE: Mitochondria are the 'powerhouses' of the cell, generating ATP
through oxidative phosphorylation via the electron transport chain and the citric acid cycle.
Q2. The sodium-potassium pump (Na⁺/K⁺-ATPase) moves ions against their concentration
gradient. This is an example of:
• A. Passive diffusion
• B. Facilitated diffusion
• C. Active transport
• D. Osmosis
RATIONALE: Active transport requires energy (ATP) to move substances against
their concentration gradient. The Na⁺/K⁺-ATPase pumps 3 Na⁺ out and 2 K⁺ in per ATP molecule
consumed.
Q3. A cell placed in a hypertonic solution will:
, • A. Swell due to water influx
• B. Remain unchanged
• C. Shrink due to water efflux
• D. Burst due to osmotic pressure
RATIONALE: In a hypertonic solution, the extracellular solute concentration is
higher than intracellular. Water moves out of the cell by osmosis, causing it to shrink (crenation).
Q4. Which phase of the cell cycle involves DNA replication?
• A. G1 phase
• B. S phase
• C. G2 phase
• D. M phase
RATIONALE: DNA replication occurs during the S (synthesis) phase of the cell
cycle, resulting in duplication of the genetic material before mitosis.
Q5. Receptor-mediated endocytosis involves:
• A. Passive movement of ligands into the cell
• B. Specific binding of ligands to cell-surface receptors before internalization
• C. Non-specific engulfment of extracellular material
• D. Exocytosis of cellular products
RATIONALE: Receptor-mediated endocytosis is a highly specific process where
ligands bind to cell-surface receptors, triggering clathrin-coated pit formation and internalization
of the ligand-receptor complex.
CHAPTER 2: Altered Cellular and Tissue Biology
