Test Bank for Understanding Pathophysiology
7th Edition
2026–2027 Edition | Study Guide & Practice Questions
Covers: Cell Biology, Genetics, Fluid & Electrolytes, Immunity, Hematologic Alterations & More
Section 1 — Cell Biology & Cellular Processes
Q: Eukaryotic cell
✓ Cell with histones, supercoiled DNA, and a distinct nucleus; contains membrane-bound
organelles
Q: Prokaryotic cell
✓ Cell with a single circular chromosome and free-floating nuclear material; lacks organelles and
nuclear membrane
Q: Nucleus
✓ Membrane-bound structure housing DNA in eukaryotes
Q: Nucleolus
✓ Region within the nucleus containing genetic material, ribonucleic acid, and DNA-binding
proteins
Q: Organelles
✓ Membrane-bounded cellular components found in eukaryotic cells
Q: Respiration (cellular)
✓ Cellular function of absorbing oxygen and using it to transform nutrients to energy
Q: Integral membrane proteins
✓ Proteins that float freely in the fluid lipid bilayer; dissolving the bilayer is required to remove
attached proteins
Q: Ligands
✓ Specific molecules that bind to plasma membrane receptors
Q: Fibronectin
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 1
, ✓ Extracellular matrix protein decreased in metastatic cancer; associated with cancerous cells
allowing metastasis
Q: Cell junction
✓ Structure that holds cells together and permits molecules to pass from cell to cell
Q: Gap junction
✓ Channels allowing direct communication between adjacent cells
Q: Desmosome
✓ Structure providing mechanical stability between cells
Q: Tight junction
✓ Barrier preventing leakage between epithelial cells
Q: Paracrine signaling
✓ Release of local chemical mediators that are quickly taken up, destroyed, or immobilized;
affecting nearby cells
Q: Cell adhesion molecules
✓ Proteins that help cells stick to each other
Q: Glycoproteins
✓ Proteins with carbohydrate chains that mark cell identity
Q: Mitochondria
✓ Organelles responsible for cellular respiration
Q: Ribosomes
✓ Sites of protein synthesis within the cell
Q: Cytoplasm
✓ Fluid component of the cell, excluding the nucleus
Q: Collagen
✓ Structural protein in the extracellular matrix providing support
Q: Elastin
✓ Protein allowing elasticity in tissues
Q: Substrate
✓ Specific substance converted to a product by an enzyme
Q: Enzyme affinity
✓ Each enzyme has high affinity for a specific substrate
Q: ATP
✓ Primary energy source for muscle contraction
Q: Citric acid cycle
✓ Phase that produces the most ATP during cellular catabolism
Q: Phases of catabolism
✓ Includes digestion, glycolysis, oxidation, and the citric acid cycle
Q: Anaerobic glycolysis
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 2
, ✓ Occurs without oxygen to allow continued muscle performance
Q: Glycolysis
✓ Initial phase of glucose metabolism producing ATP
Q: Muscle fatigue
✓ Result of ATP depletion after strenuous exercise
Q: Alpha cells (pancreas)
✓ Pancreatic cells that secrete glucagon
Q: Beta cells (pancreas)
✓ Pancreatic cells that secrete insulin
Cell Cycle Phases
Q: M Phase
✓ Cell cycle phase of nuclear and cytoplasmic division
Q: G1 Phase
✓ Period between M phase and the start of DNA synthesis
Q: S Phase
✓ Phase of DNA synthesis in the cell cycle
Q: G2 Phase
✓ Phase of RNA and protein synthesis before mitosis
Q: Anaphase
✓ Phase where centromeres split and sister chromatids are pulled to opposite poles
Membrane Transport
Q: Diffusion
✓ Passive movement of solute from high to low concentration; no energy required
Q: Osmosis
✓ Movement of water across a semipermeable membrane from low to high solute concentration
Q: Active Transport
✓ Energy-requiring movement of molecules against a concentration gradient
Q: ATPase
✓ Enzyme facilitating sodium and potassium transport across membranes
Q: Symport
✓ Transport of Na+ and Ca2+ in the same direction across a membrane
Q: Antiport
✓ Transport of molecules in opposite directions across a membrane
Q: Uniport
✓ Transport of a single molecule across the membrane
Q: Endocytosis
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 3
7th Edition
2026–2027 Edition | Study Guide & Practice Questions
Covers: Cell Biology, Genetics, Fluid & Electrolytes, Immunity, Hematologic Alterations & More
Section 1 — Cell Biology & Cellular Processes
Q: Eukaryotic cell
✓ Cell with histones, supercoiled DNA, and a distinct nucleus; contains membrane-bound
organelles
Q: Prokaryotic cell
✓ Cell with a single circular chromosome and free-floating nuclear material; lacks organelles and
nuclear membrane
Q: Nucleus
✓ Membrane-bound structure housing DNA in eukaryotes
Q: Nucleolus
✓ Region within the nucleus containing genetic material, ribonucleic acid, and DNA-binding
proteins
Q: Organelles
✓ Membrane-bounded cellular components found in eukaryotic cells
Q: Respiration (cellular)
✓ Cellular function of absorbing oxygen and using it to transform nutrients to energy
Q: Integral membrane proteins
✓ Proteins that float freely in the fluid lipid bilayer; dissolving the bilayer is required to remove
attached proteins
Q: Ligands
✓ Specific molecules that bind to plasma membrane receptors
Q: Fibronectin
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 1
, ✓ Extracellular matrix protein decreased in metastatic cancer; associated with cancerous cells
allowing metastasis
Q: Cell junction
✓ Structure that holds cells together and permits molecules to pass from cell to cell
Q: Gap junction
✓ Channels allowing direct communication between adjacent cells
Q: Desmosome
✓ Structure providing mechanical stability between cells
Q: Tight junction
✓ Barrier preventing leakage between epithelial cells
Q: Paracrine signaling
✓ Release of local chemical mediators that are quickly taken up, destroyed, or immobilized;
affecting nearby cells
Q: Cell adhesion molecules
✓ Proteins that help cells stick to each other
Q: Glycoproteins
✓ Proteins with carbohydrate chains that mark cell identity
Q: Mitochondria
✓ Organelles responsible for cellular respiration
Q: Ribosomes
✓ Sites of protein synthesis within the cell
Q: Cytoplasm
✓ Fluid component of the cell, excluding the nucleus
Q: Collagen
✓ Structural protein in the extracellular matrix providing support
Q: Elastin
✓ Protein allowing elasticity in tissues
Q: Substrate
✓ Specific substance converted to a product by an enzyme
Q: Enzyme affinity
✓ Each enzyme has high affinity for a specific substrate
Q: ATP
✓ Primary energy source for muscle contraction
Q: Citric acid cycle
✓ Phase that produces the most ATP during cellular catabolism
Q: Phases of catabolism
✓ Includes digestion, glycolysis, oxidation, and the citric acid cycle
Q: Anaerobic glycolysis
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 2
, ✓ Occurs without oxygen to allow continued muscle performance
Q: Glycolysis
✓ Initial phase of glucose metabolism producing ATP
Q: Muscle fatigue
✓ Result of ATP depletion after strenuous exercise
Q: Alpha cells (pancreas)
✓ Pancreatic cells that secrete glucagon
Q: Beta cells (pancreas)
✓ Pancreatic cells that secrete insulin
Cell Cycle Phases
Q: M Phase
✓ Cell cycle phase of nuclear and cytoplasmic division
Q: G1 Phase
✓ Period between M phase and the start of DNA synthesis
Q: S Phase
✓ Phase of DNA synthesis in the cell cycle
Q: G2 Phase
✓ Phase of RNA and protein synthesis before mitosis
Q: Anaphase
✓ Phase where centromeres split and sister chromatids are pulled to opposite poles
Membrane Transport
Q: Diffusion
✓ Passive movement of solute from high to low concentration; no energy required
Q: Osmosis
✓ Movement of water across a semipermeable membrane from low to high solute concentration
Q: Active Transport
✓ Energy-requiring movement of molecules against a concentration gradient
Q: ATPase
✓ Enzyme facilitating sodium and potassium transport across membranes
Q: Symport
✓ Transport of Na+ and Ca2+ in the same direction across a membrane
Q: Antiport
✓ Transport of molecules in opposite directions across a membrane
Q: Uniport
✓ Transport of a single molecule across the membrane
Q: Endocytosis
Test Bank — Understanding Pathophysiology 7th Ed. 2026–2027 | Page 3
