NSG 5003 PATHOPHYSIOLOGY CORE MAIN
QUESTIONS AND ANSWERS SET A+
✔✔During cell injury caused by hypoxia, sodium and water move into the cell because:
- ✔✔The pump that transports sodium out of the cell cannot function due to a decrease
in ATP levels.
✔✔Is it true that a eukaryotic cell is smaller than a prokaryotic cell? - ✔✔No, eukaryotic
cells are larger than prokaryotic cells.
✔✔What structures do eukaryotic cells contain? - ✔✔Eukaryotic cells contain structures
called organelles.
✔✔Do eukaryotic cells lack a well-defined nucleus? - ✔✔No, eukaryotic cells have a
well-defined nucleus.
✔✔Do eukaryotic cells contain histones? - ✔✔Yes, eukaryotic cells contain histones.
✔✔What is the function of a histone found in a eukaryotic cell? - ✔✔Histones are
binding proteins that cause the supercoiling of DNA into chromosomes.
✔✔What organelle is responsible for the metabolism of cellular energy? - ✔✔The
organelle responsible for cellular energy metabolism is the mitochondrion.
✔✔What is the Golgi complex? - ✔✔The Golgi complex is responsible for processing
and packaging proteins that are synthesized in the endoplasmic reticulum.
✔✔What is the endoplasmic reticulum? - ✔✔The endoplasmic reticulum is an organelle
involved in the synthesis of proteins and lipids, and it is divided into rough and smooth
types.
✔✔What is the nucleolus? - ✔✔The nucleolus is a small, dense structure within the
nucleus that is involved in the production of ribosomal RNA (rRNA).
,✔✔What is a desmosome? - ✔✔A desmosome is a type of cell junction that holds cells
together by forming continuous bands, providing structural stability.
✔✔What is the function of a second messenger? - ✔✔A second messenger is an
intracellular signaling molecule that is activated by the binding of a first messenger
(ligand) to a receptor, triggering a cascade of intracellular events.
✔✔What is oxidative phosphorylation? - ✔✔Oxidative phosphorylation is a metabolic
process that occurs in the mitochondria, where energy from carbohydrates, fats, and
proteins is transferred to ATP.
✔✔What is diffusion? - ✔✔Diffusion is the movement of solute molecules from an area
of high concentration to an area of low concentration.
✔✔What is catabolism? - ✔✔Catabolism is a metabolic process that breaks down
molecules to release energy.
✔✔What is chemotaxis? - ✔✔Chemotaxis is the movement of cells along a chemical
gradient, often in response to chemical signals.
✔✔What is an amphipathic molecule? - ✔✔An amphipathic molecule has both
hydrophobic (water-repelling) and hydrophilic (water-attracting) properties.
✔✔What are the functions of proteins? - ✔✔Proteins can function as enzymes,
transport channels, cell surface markers, and components of cell adhesion molecules.
✔✔What is hypoxia? - ✔✔Hypoxia is a condition characterized by insufficient oxygen in
the tissues, which is the most common cause of cellular injury.
✔✔What is the role of mitochondria? - ✔✔Mitochondria play a crucial role in cellular
metabolism, respiration, and energy production.
✔✔What is glycolysis? - ✔✔Glycolysis is the metabolic pathway that breaks down
glucose to produce energy in the form of ATP.
✔✔What is osmosis? - ✔✔Osmosis is the movement of water molecules across a
semipermeable membrane from an area of lower solute concentration to an area of
higher solute concentration.
✔✔What is oxidative cellular metabolism? - ✔✔Oxidative cellular metabolism involves a
series of biochemical reactions that convert nutrients into energy, primarily in the form of
ATP.
, ✔✔What is the function of tight junctions? - ✔✔Tight junctions serve as barriers to
diffusion, preventing the movement of substances between cells.
✔✔What is a gap junction? - ✔✔Gap junctions are clusters of channels that allow for
communication and the transfer of ions and small molecules between adjacent cells.
✔✔What is the role of first messengers? - ✔✔First messengers are extracellular ligands
that bind to cell surface receptors, initiating intracellular signaling pathways.
✔✔What is the significance of calcium as a second messenger? - ✔✔Calcium acts as a
second messenger that can trigger various cellular responses, including muscle
contraction and neurotransmitter release.
✔✔What is the role of enzymes in cellular processes? - ✔✔Enzymes act as catalysts
that speed up biochemical reactions within the cell.
✔✔What is the function of cell surface markers? - ✔✔Cell surface markers are proteins
that help identify and differentiate cells, playing a role in immune response and cell
communication.
✔✔What is the importance of ATP synthesis? - ✔✔ATP synthesis is crucial for providing
energy for various cellular processes, including metabolism, muscle contraction, and
active transport.
✔✔What is the role of free radicals in cellular injury? - ✔✔Free radicals can cause
oxidative damage to cells, leading to cellular injury and dysfunction.
✔✔What is the function of ligands in cell signaling? - ✔✔Ligands are molecules that
bind to receptors on cell surfaces, triggering specific cellular responses.
✔✔What is Mercury? - ✔✔A heavy metal that can worsen chronic conditions such as
Alzheimer's disease and multiple sclerosis.
✔✔What is an Epidural Hematoma? - ✔✔A collection of blood located between the
inner surface of the skull and the dura mater.
✔✔What is a Contusion? - ✔✔A bruise or bleeding into the skin and underlying tissue.
✔✔What is a Subdural Hematoma? - ✔✔A collection of blood between the inner
surface of the dura mater and the surface of the brain.
✔✔What is a Subarachnoid Hemorrhage? - ✔✔A condition in which a cerebral arterial
aneurysm ruptures, causing bleeding in the subarachnoid space.
QUESTIONS AND ANSWERS SET A+
✔✔During cell injury caused by hypoxia, sodium and water move into the cell because:
- ✔✔The pump that transports sodium out of the cell cannot function due to a decrease
in ATP levels.
✔✔Is it true that a eukaryotic cell is smaller than a prokaryotic cell? - ✔✔No, eukaryotic
cells are larger than prokaryotic cells.
✔✔What structures do eukaryotic cells contain? - ✔✔Eukaryotic cells contain structures
called organelles.
✔✔Do eukaryotic cells lack a well-defined nucleus? - ✔✔No, eukaryotic cells have a
well-defined nucleus.
✔✔Do eukaryotic cells contain histones? - ✔✔Yes, eukaryotic cells contain histones.
✔✔What is the function of a histone found in a eukaryotic cell? - ✔✔Histones are
binding proteins that cause the supercoiling of DNA into chromosomes.
✔✔What organelle is responsible for the metabolism of cellular energy? - ✔✔The
organelle responsible for cellular energy metabolism is the mitochondrion.
✔✔What is the Golgi complex? - ✔✔The Golgi complex is responsible for processing
and packaging proteins that are synthesized in the endoplasmic reticulum.
✔✔What is the endoplasmic reticulum? - ✔✔The endoplasmic reticulum is an organelle
involved in the synthesis of proteins and lipids, and it is divided into rough and smooth
types.
✔✔What is the nucleolus? - ✔✔The nucleolus is a small, dense structure within the
nucleus that is involved in the production of ribosomal RNA (rRNA).
,✔✔What is a desmosome? - ✔✔A desmosome is a type of cell junction that holds cells
together by forming continuous bands, providing structural stability.
✔✔What is the function of a second messenger? - ✔✔A second messenger is an
intracellular signaling molecule that is activated by the binding of a first messenger
(ligand) to a receptor, triggering a cascade of intracellular events.
✔✔What is oxidative phosphorylation? - ✔✔Oxidative phosphorylation is a metabolic
process that occurs in the mitochondria, where energy from carbohydrates, fats, and
proteins is transferred to ATP.
✔✔What is diffusion? - ✔✔Diffusion is the movement of solute molecules from an area
of high concentration to an area of low concentration.
✔✔What is catabolism? - ✔✔Catabolism is a metabolic process that breaks down
molecules to release energy.
✔✔What is chemotaxis? - ✔✔Chemotaxis is the movement of cells along a chemical
gradient, often in response to chemical signals.
✔✔What is an amphipathic molecule? - ✔✔An amphipathic molecule has both
hydrophobic (water-repelling) and hydrophilic (water-attracting) properties.
✔✔What are the functions of proteins? - ✔✔Proteins can function as enzymes,
transport channels, cell surface markers, and components of cell adhesion molecules.
✔✔What is hypoxia? - ✔✔Hypoxia is a condition characterized by insufficient oxygen in
the tissues, which is the most common cause of cellular injury.
✔✔What is the role of mitochondria? - ✔✔Mitochondria play a crucial role in cellular
metabolism, respiration, and energy production.
✔✔What is glycolysis? - ✔✔Glycolysis is the metabolic pathway that breaks down
glucose to produce energy in the form of ATP.
✔✔What is osmosis? - ✔✔Osmosis is the movement of water molecules across a
semipermeable membrane from an area of lower solute concentration to an area of
higher solute concentration.
✔✔What is oxidative cellular metabolism? - ✔✔Oxidative cellular metabolism involves a
series of biochemical reactions that convert nutrients into energy, primarily in the form of
ATP.
, ✔✔What is the function of tight junctions? - ✔✔Tight junctions serve as barriers to
diffusion, preventing the movement of substances between cells.
✔✔What is a gap junction? - ✔✔Gap junctions are clusters of channels that allow for
communication and the transfer of ions and small molecules between adjacent cells.
✔✔What is the role of first messengers? - ✔✔First messengers are extracellular ligands
that bind to cell surface receptors, initiating intracellular signaling pathways.
✔✔What is the significance of calcium as a second messenger? - ✔✔Calcium acts as a
second messenger that can trigger various cellular responses, including muscle
contraction and neurotransmitter release.
✔✔What is the role of enzymes in cellular processes? - ✔✔Enzymes act as catalysts
that speed up biochemical reactions within the cell.
✔✔What is the function of cell surface markers? - ✔✔Cell surface markers are proteins
that help identify and differentiate cells, playing a role in immune response and cell
communication.
✔✔What is the importance of ATP synthesis? - ✔✔ATP synthesis is crucial for providing
energy for various cellular processes, including metabolism, muscle contraction, and
active transport.
✔✔What is the role of free radicals in cellular injury? - ✔✔Free radicals can cause
oxidative damage to cells, leading to cellular injury and dysfunction.
✔✔What is the function of ligands in cell signaling? - ✔✔Ligands are molecules that
bind to receptors on cell surfaces, triggering specific cellular responses.
✔✔What is Mercury? - ✔✔A heavy metal that can worsen chronic conditions such as
Alzheimer's disease and multiple sclerosis.
✔✔What is an Epidural Hematoma? - ✔✔A collection of blood located between the
inner surface of the skull and the dura mater.
✔✔What is a Contusion? - ✔✔A bruise or bleeding into the skin and underlying tissue.
✔✔What is a Subdural Hematoma? - ✔✔A collection of blood between the inner
surface of the dura mater and the surface of the brain.
✔✔What is a Subarachnoid Hemorrhage? - ✔✔A condition in which a cerebral arterial
aneurysm ruptures, causing bleeding in the subarachnoid space.
