NURS 611 EXAM 1 PATHO ACTUAL EXAM AND TEST BANK NEWEST VERSION
COMPLETE 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+ (MARYVILLE UNIVERSITY)/NEWEST
UPDATE!!!
Question 1
Which of the following best describes apoptosis?
A) Rapid loss of plasma membrane structure and organelle swelling
B) Accidental cell death caused by external injury
C) Programmed cellular self-destruction regulated by specific genes
D) Cellular death always associated with severe inflammation
E) The primary cause of myocardial infarction
Correct Answer: C) Programmed cellular self-destruction regulated by specific genes
Rationale: Apoptosis is a distinct, regulated process of "cellular suicide" used to eliminate
unwanted or damaged cell populations without eliciting an inflammatory response. Unlike
necrosis, it is a tidy, programmed event.
Question 2
A nurse is reviewing a pathology report that describes "mitochondria dysfunction and rapid loss
of plasma membrane structure." Which process is being described?
A) Apoptosis
B) Hyperplasia
C) Necrosis
D) Metaplasia
E) Physiologic atrophy
Correct Answer: C) Necrosis
Rationale: Necrosis is characterized by the breakdown of the plasma membrane, swelling of
organelles, and mitochondrial dysfunction. It is typically a passive, messy form of cell death
that often leads to inflammation.
Question 3
What is the most common cause of cellular injury leading to necrosis, particularly in the heart
and kidneys?
A) Chemical toxicity
B) Ionizing radiation
C) Hypoxia
D) Genetic defects
E) Vitamin deficiency
Correct Answer: C) Hypoxia
Rationale: Hypoxia, or lack of sufficient oxygen, is the #1 cause of cellular injury. It
prevents the cell from performing oxidative phosphorylation, leading to ATP depletion and
eventual necrosis if the oxygen supply is not restored.
Question 4
A patient is diagnosed with localized hypoxia caused by a blood clot in the femoral artery. What
, 2
is the most likely underlying cause of this hypoxia?
A) Anemia
B) Ischemia
C) Carbon monoxide poisoning
D) Altitude sickness
E) Hypercapnia
Correct Answer: B) Ischemia
Rationale: While there are many causes of hypoxia, ischemia (reduced blood supply) is the
#1 cause of hypoxia in clinical practice. Ischemia is often caused by narrowing of the
arteries or blood clots.
Question 5
Which organelle is considered the main component of the cell and contains the nucleolus?
A) Golgi apparatus
B) Mitochondria
C) Nucleus
D) Endoplasmic reticulum
E) Lysosome
Correct Answer: C) Nucleus
Rationale: The nucleus is the largest membrane-bound organelle. It acts as the control
center of the cell and houses the nucleolus and the majority of the cell’s genetic material.
Question 6
The nucleolus is primarily composed of which of the following?
A) Only lipids and cholesterol
B) RNA, cellular DNA, DNA binding proteins, and histones
C) ATP and glucose
D) Sodium and Potassium ions
E) Digestive enzymes
Correct Answer: B) RNA, cellular DNA, DNA binding proteins, and histones
Rationale: The nucleolus is a dense region within the nucleus where RNA is processed and
ribosomes are synthesized. It contains most of the cellular DNA and histones necessary for
DNA organization.
Question 7
Why are histones essential for the process of cell division?
A) They synthesize ATP for the spindle fibers
B) They digest the nuclear envelope
C) They bind to DNA and fold it into chromosomes (chromatin)
D) They act as receptors for growth hormones
E) They pump sodium out of the nucleus
, 3
Correct Answer: C) They bind to DNA and fold it into chromosomes (chromatin)
Rationale: Histones are DNA-binding proteins that allow long strands of DNA to be tightly
coiled into chromatin and eventually chromosomes. Without this folding, DNA would be
too disorganized to be accurately partitioned during cell division.
Question 8
Which complex is synthesized in the nucleolus and provides the chief site for cellular protein
synthesis?
A) Mitochondria
B) Ribosomes
C) Lysosomes
D) Peroxisomes
E) Nuclear pore complexes
Correct Answer: B) Ribosomes
Rationale: Ribosomes are nucleoproteins (RNA-protein complexes) whose primary function
is to serve as the site where protein synthesis (translation) occurs.
Question 9
Where in the cell are ribosomes primarily located?
A) Only inside the nucleus
B) The mitochondrial matrix
C) The cytoplasm and the surface of the rough ER
D) The smooth ER and the Golgi
E) Floating inside lysosomes
Correct Answer: C) The cytoplasm and the surface of the rough ER
Rationale: Ribosomes can be "free" in the cytoplasm or "bound" to the surface of the
Rough Endoplasmic Reticulum (RER). Their location determines the destination of the
proteins they produce.
Question 10
Which organelle is described as a network of flattened, smooth membranes frequently located
near the nucleus?
A) Mitochondria
B) Rough ER
C) Golgi apparatus
D) Lysosome
E) Nucleolus
Correct Answer: C) Golgi apparatus
Rationale: The Golgi apparatus (or complex) is the cell's "packaging center." It consists of
flattened sacs (cisternae) and is responsible for processing and directing protein traffic.
, 4
Question 11
What is the primary function of the Golgi apparatus?
A) Energy production via the citric acid cycle
B) Taking proteins from the ER and packaging them into secretory vesicles
C) Digesting damaged organelles
D) Synthesizing lipids and steroids
E) Folding DNA into histones
Correct Answer: B) Taking proteins from the ER and packaging them into secretory vesicles
Rationale: The Golgi receives proteins from the ER, refines them, and packages them into
membrane-bound secretory vesicles to be sent to their specific intra- or extracellular
destinations.
Question 12
Which organelle is responsible for maintaining cellular health by removing toxic components
and useless organelles?
A) Ribosome
B) Nucleus
C) Lysosome
D) Mitochondrion
E) Histone
Correct Answer: C) Lysosome
Rationale: Lysosomes contain digestive enzymes. Their role is to clean the cell by breaking
down toxins, cellular debris, and worn-out organelles. They also signal cellular adaptation
based on energy levels.
Question 13
How does the aging process specifically impact lysosomal function?
A) Lysosomes become more efficient at regeneration
B) It leads to a progressive loss of lysosomal efficiency
C) Lysosomes begin to synthesize more DNA
D) Aging causes lysosomes to disappear from the cell
E) Lysosomes stop producing proteins
Correct Answer: B) It leads to a progressive loss of lysosomal efficiency
Rationale: With age, lysosomes become less efficient. This decline reduces the regenerative
capacity of organs and tissues, as the cell can no longer effectively clear damage or recycle
components.
Question 14
Lysosomal components translate information about nutrient abundance and energy levels into
instructions that regulate:
A) Blood pressure
COMPLETE 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|ALREADY GRADED A+ (MARYVILLE UNIVERSITY)/NEWEST
UPDATE!!!
Question 1
Which of the following best describes apoptosis?
A) Rapid loss of plasma membrane structure and organelle swelling
B) Accidental cell death caused by external injury
C) Programmed cellular self-destruction regulated by specific genes
D) Cellular death always associated with severe inflammation
E) The primary cause of myocardial infarction
Correct Answer: C) Programmed cellular self-destruction regulated by specific genes
Rationale: Apoptosis is a distinct, regulated process of "cellular suicide" used to eliminate
unwanted or damaged cell populations without eliciting an inflammatory response. Unlike
necrosis, it is a tidy, programmed event.
Question 2
A nurse is reviewing a pathology report that describes "mitochondria dysfunction and rapid loss
of plasma membrane structure." Which process is being described?
A) Apoptosis
B) Hyperplasia
C) Necrosis
D) Metaplasia
E) Physiologic atrophy
Correct Answer: C) Necrosis
Rationale: Necrosis is characterized by the breakdown of the plasma membrane, swelling of
organelles, and mitochondrial dysfunction. It is typically a passive, messy form of cell death
that often leads to inflammation.
Question 3
What is the most common cause of cellular injury leading to necrosis, particularly in the heart
and kidneys?
A) Chemical toxicity
B) Ionizing radiation
C) Hypoxia
D) Genetic defects
E) Vitamin deficiency
Correct Answer: C) Hypoxia
Rationale: Hypoxia, or lack of sufficient oxygen, is the #1 cause of cellular injury. It
prevents the cell from performing oxidative phosphorylation, leading to ATP depletion and
eventual necrosis if the oxygen supply is not restored.
Question 4
A patient is diagnosed with localized hypoxia caused by a blood clot in the femoral artery. What
, 2
is the most likely underlying cause of this hypoxia?
A) Anemia
B) Ischemia
C) Carbon monoxide poisoning
D) Altitude sickness
E) Hypercapnia
Correct Answer: B) Ischemia
Rationale: While there are many causes of hypoxia, ischemia (reduced blood supply) is the
#1 cause of hypoxia in clinical practice. Ischemia is often caused by narrowing of the
arteries or blood clots.
Question 5
Which organelle is considered the main component of the cell and contains the nucleolus?
A) Golgi apparatus
B) Mitochondria
C) Nucleus
D) Endoplasmic reticulum
E) Lysosome
Correct Answer: C) Nucleus
Rationale: The nucleus is the largest membrane-bound organelle. It acts as the control
center of the cell and houses the nucleolus and the majority of the cell’s genetic material.
Question 6
The nucleolus is primarily composed of which of the following?
A) Only lipids and cholesterol
B) RNA, cellular DNA, DNA binding proteins, and histones
C) ATP and glucose
D) Sodium and Potassium ions
E) Digestive enzymes
Correct Answer: B) RNA, cellular DNA, DNA binding proteins, and histones
Rationale: The nucleolus is a dense region within the nucleus where RNA is processed and
ribosomes are synthesized. It contains most of the cellular DNA and histones necessary for
DNA organization.
Question 7
Why are histones essential for the process of cell division?
A) They synthesize ATP for the spindle fibers
B) They digest the nuclear envelope
C) They bind to DNA and fold it into chromosomes (chromatin)
D) They act as receptors for growth hormones
E) They pump sodium out of the nucleus
, 3
Correct Answer: C) They bind to DNA and fold it into chromosomes (chromatin)
Rationale: Histones are DNA-binding proteins that allow long strands of DNA to be tightly
coiled into chromatin and eventually chromosomes. Without this folding, DNA would be
too disorganized to be accurately partitioned during cell division.
Question 8
Which complex is synthesized in the nucleolus and provides the chief site for cellular protein
synthesis?
A) Mitochondria
B) Ribosomes
C) Lysosomes
D) Peroxisomes
E) Nuclear pore complexes
Correct Answer: B) Ribosomes
Rationale: Ribosomes are nucleoproteins (RNA-protein complexes) whose primary function
is to serve as the site where protein synthesis (translation) occurs.
Question 9
Where in the cell are ribosomes primarily located?
A) Only inside the nucleus
B) The mitochondrial matrix
C) The cytoplasm and the surface of the rough ER
D) The smooth ER and the Golgi
E) Floating inside lysosomes
Correct Answer: C) The cytoplasm and the surface of the rough ER
Rationale: Ribosomes can be "free" in the cytoplasm or "bound" to the surface of the
Rough Endoplasmic Reticulum (RER). Their location determines the destination of the
proteins they produce.
Question 10
Which organelle is described as a network of flattened, smooth membranes frequently located
near the nucleus?
A) Mitochondria
B) Rough ER
C) Golgi apparatus
D) Lysosome
E) Nucleolus
Correct Answer: C) Golgi apparatus
Rationale: The Golgi apparatus (or complex) is the cell's "packaging center." It consists of
flattened sacs (cisternae) and is responsible for processing and directing protein traffic.
, 4
Question 11
What is the primary function of the Golgi apparatus?
A) Energy production via the citric acid cycle
B) Taking proteins from the ER and packaging them into secretory vesicles
C) Digesting damaged organelles
D) Synthesizing lipids and steroids
E) Folding DNA into histones
Correct Answer: B) Taking proteins from the ER and packaging them into secretory vesicles
Rationale: The Golgi receives proteins from the ER, refines them, and packages them into
membrane-bound secretory vesicles to be sent to their specific intra- or extracellular
destinations.
Question 12
Which organelle is responsible for maintaining cellular health by removing toxic components
and useless organelles?
A) Ribosome
B) Nucleus
C) Lysosome
D) Mitochondrion
E) Histone
Correct Answer: C) Lysosome
Rationale: Lysosomes contain digestive enzymes. Their role is to clean the cell by breaking
down toxins, cellular debris, and worn-out organelles. They also signal cellular adaptation
based on energy levels.
Question 13
How does the aging process specifically impact lysosomal function?
A) Lysosomes become more efficient at regeneration
B) It leads to a progressive loss of lysosomal efficiency
C) Lysosomes begin to synthesize more DNA
D) Aging causes lysosomes to disappear from the cell
E) Lysosomes stop producing proteins
Correct Answer: B) It leads to a progressive loss of lysosomal efficiency
Rationale: With age, lysosomes become less efficient. This decline reduces the regenerative
capacity of organs and tissues, as the cell can no longer effectively clear damage or recycle
components.
Question 14
Lysosomal components translate information about nutrient abundance and energy levels into
instructions that regulate:
A) Blood pressure
