1
NR 507 Week 4 Midterm Exam Questions 1-
100 NR-507 Advanced Pathophysiology NR
507 Week 4 Midterm Exam Examplify Online
Proctored Questions and Answers Graded
A+
Cellular Biology & Genetics
Q1: Which cellular component is primarily responsible for generating ATP through oxidative
phosphorylation?
Correct Answer: Mitochondrion
Rationale: Mitochondria are the "powerhouses" of the cell, converting nutrients into ATP
through the electron transport chain within mitochondrial membranes .
Q2: Apoptosis differs from necrosis primarily because:
Correct Answer: It is a programmed and non-inflammatory process
Rationale: Apoptosis is a regulated, energy-dependent form of cell death that prevents
inflammation, unlike necrosis which involves membrane rupture and inflammation .
Q3: Which term describes normal cell self-destruction?
Correct Answer: Apoptosis
Rationale: Apoptosis is the body's normal mechanism for programmed cell death without
triggering an inflammatory response .
Q4: A 4-year-old male presents with neonatal hypotonia, hyperphagia leading to obesity,
hypogonadism, and small hands/feet. Genetic testing shows deletion on chromosome 15. Which
parent contributed the deleted chromosome?
Correct Answer: Paternal chromosome; Prader-Willi Syndrome
Rationale: Prader-Willi syndrome results from deletion of paternally inherited genes on
chromosome 15q11-q13. Angelman syndrome results from the same deletion on the maternal
chromosome due to genomic imprinting .
Q5: Tumor stage 2 indicates:
, Correct Answer: Cancer spread to regional structures
Rationale: Cancer staging describes tumor extent - Stage II typically indicates locally advanced
disease with spread to regional lymph nodes or structures .
Q6: Benign tumors are characterized by:
Correct Answer: Well-differentiated cells
Rationale: Benign tumors maintain cellular differentiation resembling normal tissue, typically
grow slowly, and remain encapsulated .
Immunology & Hypersensitivity
Q7: Which antibody mediates Type I hypersensitivity reactions?
Correct Answer: IgE
Rationale: IgE binds to mast cells and basophils, triggering histamine release upon antigen
exposure leading to allergic responses .
Q8: What is the definition of hypersensitivity?
Correct Answer: Altered immunologic response causing disease
Rationale: Hypersensitivity represents an exaggerated or inappropriate immune response that
results in tissue damage .
Q9: Which immunoglobulin is first produced during the initial response to an antigen?
Correct Answer: IgM
Rationale: IgM is the first antibody produced during a primary immune response before class
switching to IgG occurs .
Q10: A patient with rheumatoid arthritis develops a non-healing leg ulcer with biopsy showing
vasculitis. Which antibody is most likely positive?
Correct Answer: Rheumatoid factor (RF)
Rationale: Rheumatoid vasculitis is associated with high-titer rheumatoid factor in autoimmune-
mediated inflammation .
Q11: Which immune mechanism underlies Type I hypersensitivity reactions?
Correct Answer: IgE-mediated mast cell activation
Rationale: IgE binding to mast cell receptors triggers degranulation and release of histamine and
other inflammatory mediators .
Q12: Low immunoglobulin levels increase susceptibility to infections of which type?
Correct Answer: IgA deficiency increases mucosal infection risk
Rationale: IgA provides primary immune defense at mucosal surfaces .
NR 507 Week 4 Midterm Exam Questions 1-
100 NR-507 Advanced Pathophysiology NR
507 Week 4 Midterm Exam Examplify Online
Proctored Questions and Answers Graded
A+
Cellular Biology & Genetics
Q1: Which cellular component is primarily responsible for generating ATP through oxidative
phosphorylation?
Correct Answer: Mitochondrion
Rationale: Mitochondria are the "powerhouses" of the cell, converting nutrients into ATP
through the electron transport chain within mitochondrial membranes .
Q2: Apoptosis differs from necrosis primarily because:
Correct Answer: It is a programmed and non-inflammatory process
Rationale: Apoptosis is a regulated, energy-dependent form of cell death that prevents
inflammation, unlike necrosis which involves membrane rupture and inflammation .
Q3: Which term describes normal cell self-destruction?
Correct Answer: Apoptosis
Rationale: Apoptosis is the body's normal mechanism for programmed cell death without
triggering an inflammatory response .
Q4: A 4-year-old male presents with neonatal hypotonia, hyperphagia leading to obesity,
hypogonadism, and small hands/feet. Genetic testing shows deletion on chromosome 15. Which
parent contributed the deleted chromosome?
Correct Answer: Paternal chromosome; Prader-Willi Syndrome
Rationale: Prader-Willi syndrome results from deletion of paternally inherited genes on
chromosome 15q11-q13. Angelman syndrome results from the same deletion on the maternal
chromosome due to genomic imprinting .
Q5: Tumor stage 2 indicates:
, Correct Answer: Cancer spread to regional structures
Rationale: Cancer staging describes tumor extent - Stage II typically indicates locally advanced
disease with spread to regional lymph nodes or structures .
Q6: Benign tumors are characterized by:
Correct Answer: Well-differentiated cells
Rationale: Benign tumors maintain cellular differentiation resembling normal tissue, typically
grow slowly, and remain encapsulated .
Immunology & Hypersensitivity
Q7: Which antibody mediates Type I hypersensitivity reactions?
Correct Answer: IgE
Rationale: IgE binds to mast cells and basophils, triggering histamine release upon antigen
exposure leading to allergic responses .
Q8: What is the definition of hypersensitivity?
Correct Answer: Altered immunologic response causing disease
Rationale: Hypersensitivity represents an exaggerated or inappropriate immune response that
results in tissue damage .
Q9: Which immunoglobulin is first produced during the initial response to an antigen?
Correct Answer: IgM
Rationale: IgM is the first antibody produced during a primary immune response before class
switching to IgG occurs .
Q10: A patient with rheumatoid arthritis develops a non-healing leg ulcer with biopsy showing
vasculitis. Which antibody is most likely positive?
Correct Answer: Rheumatoid factor (RF)
Rationale: Rheumatoid vasculitis is associated with high-titer rheumatoid factor in autoimmune-
mediated inflammation .
Q11: Which immune mechanism underlies Type I hypersensitivity reactions?
Correct Answer: IgE-mediated mast cell activation
Rationale: IgE binding to mast cell receptors triggers degranulation and release of histamine and
other inflammatory mediators .
Q12: Low immunoglobulin levels increase susceptibility to infections of which type?
Correct Answer: IgA deficiency increases mucosal infection risk
Rationale: IgA provides primary immune defense at mucosal surfaces .
