Kuby Immunology 8th Edition Test Bank by
Jenni Punt | Complete Chapters 1-20
Verified Q&A | Ultimate A+ Exam Prep
Guide, Real Practice Questions & Detailed
Explanations
1. Which feature best distinguishes the adaptive immune response from the
innate immune response?
A. Recognition of pathogen-associated molecular patterns
B. Rapid activation after tissue injury
C. Generation of immunologic memory
D. Activation of complement
Answer: C. Generation of immunologic memory
Rationale: Adaptive immunity develops antigen-specific responses and generates
memory lymphocytes, allowing a faster and stronger response upon subsequent
exposure to the same antigen.
2. Which cells are primarily responsible for antibody production?
A. Neutrophils
B. Plasma cells
C. Natural killer cells
D. Macrophages
Answer: B. Plasma cells
Rationale: Plasma cells are differentiated B lymphocytes specialized for secreting
large quantities of antibodies.
3. What is the primary function of the thymus in adaptive immunity?
,A. B-cell antibody secretion
B. T-cell maturation and selection
C. Complement synthesis
D. Neutrophil production
Answer: B. T-cell maturation and selection
Rationale: T-cell precursors migrate to the thymus, where they undergo
maturation and positive and negative selection before entering the peripheral
immune system.
4. Which molecule presents endogenous peptide antigens to CD8+ T cells?
A. MHC class I
B. MHC class II
C. CD4
D. B-cell receptor
Answer: A. MHC class I
Rationale: MHC class I molecules display peptides derived primarily from
intracellular proteins to CD8+ cytotoxic T lymphocytes.
5. MHC class II molecules primarily present antigen to which cells?
A. CD8+ T cells
B. CD4+ T cells
C. Natural killer cells
D. Erythrocytes
Answer: B. CD4+ T cells
Rationale: MHC class II molecules are expressed primarily by professional
antigen-presenting cells and present extracellularly derived peptides to CD4+
helper T cells.
6. Which cell is considered a professional antigen-presenting cell?
A. Erythrocyte
B. Dendritic cell
,C. Platelet
D. Skeletal muscle cell
Answer: B. Dendritic cell
Rationale: Dendritic cells efficiently capture, process, and present antigens and
are particularly important for initiating naïve T-cell responses.
7. What is the main role of pattern-recognition receptors?
A. Rearrange immunoglobulin genes
B. Recognize conserved microbial or damage-associated molecular patterns
C. Produce antibodies
D. Destroy red blood cells
Answer: B. Recognize conserved microbial or damage-associated molecular
patterns
Rationale: Pattern-recognition receptors detect conserved molecular structures
associated with pathogens or cellular damage and initiate innate immune
responses.
8. Which receptor is an example of a pattern-recognition receptor?
A. Toll-like receptor
B. T-cell receptor
C. B-cell receptor
D. Fc receptor only
Answer: A. Toll-like receptor
Rationale: Toll-like receptors recognize specific pathogen-associated molecular
patterns and activate signaling pathways that promote inflammation and
antimicrobial responses.
9. Which complement pathway can be activated directly by microbial surface
structures without requiring antibodies?
A. Classical pathway
B. Alternative pathway
, C. Antibody pathway
D. Immunoglobulin pathway
Answer: B. Alternative pathway
Rationale: The alternative complement pathway can be activated on microbial
surfaces independently of antibodies.
10. Which complement fragment is particularly important for attracting
leukocytes to sites of infection?
A. C3a
B. C5a
C. C1q
D. C9
Answer: B. C5a
Rationale: C5a is a potent inflammatory mediator and chemoattractant that
promotes recruitment and activation of leukocytes.
11. What is the primary function of the membrane attack complex?
A. Antibody production
B. T-cell maturation
C. Formation of pores in susceptible target membranes
D. Antigen presentation
Answer: C. Formation of pores in susceptible target membranes
Rationale: The terminal complement components form the membrane attack
complex, which can create membrane pores and cause target-cell lysis.
12. Which immunoglobulin is usually the first antibody isotype produced
during a primary immune response?
A. IgA
B. IgE
C. IgG
D. IgM
Jenni Punt | Complete Chapters 1-20
Verified Q&A | Ultimate A+ Exam Prep
Guide, Real Practice Questions & Detailed
Explanations
1. Which feature best distinguishes the adaptive immune response from the
innate immune response?
A. Recognition of pathogen-associated molecular patterns
B. Rapid activation after tissue injury
C. Generation of immunologic memory
D. Activation of complement
Answer: C. Generation of immunologic memory
Rationale: Adaptive immunity develops antigen-specific responses and generates
memory lymphocytes, allowing a faster and stronger response upon subsequent
exposure to the same antigen.
2. Which cells are primarily responsible for antibody production?
A. Neutrophils
B. Plasma cells
C. Natural killer cells
D. Macrophages
Answer: B. Plasma cells
Rationale: Plasma cells are differentiated B lymphocytes specialized for secreting
large quantities of antibodies.
3. What is the primary function of the thymus in adaptive immunity?
,A. B-cell antibody secretion
B. T-cell maturation and selection
C. Complement synthesis
D. Neutrophil production
Answer: B. T-cell maturation and selection
Rationale: T-cell precursors migrate to the thymus, where they undergo
maturation and positive and negative selection before entering the peripheral
immune system.
4. Which molecule presents endogenous peptide antigens to CD8+ T cells?
A. MHC class I
B. MHC class II
C. CD4
D. B-cell receptor
Answer: A. MHC class I
Rationale: MHC class I molecules display peptides derived primarily from
intracellular proteins to CD8+ cytotoxic T lymphocytes.
5. MHC class II molecules primarily present antigen to which cells?
A. CD8+ T cells
B. CD4+ T cells
C. Natural killer cells
D. Erythrocytes
Answer: B. CD4+ T cells
Rationale: MHC class II molecules are expressed primarily by professional
antigen-presenting cells and present extracellularly derived peptides to CD4+
helper T cells.
6. Which cell is considered a professional antigen-presenting cell?
A. Erythrocyte
B. Dendritic cell
,C. Platelet
D. Skeletal muscle cell
Answer: B. Dendritic cell
Rationale: Dendritic cells efficiently capture, process, and present antigens and
are particularly important for initiating naïve T-cell responses.
7. What is the main role of pattern-recognition receptors?
A. Rearrange immunoglobulin genes
B. Recognize conserved microbial or damage-associated molecular patterns
C. Produce antibodies
D. Destroy red blood cells
Answer: B. Recognize conserved microbial or damage-associated molecular
patterns
Rationale: Pattern-recognition receptors detect conserved molecular structures
associated with pathogens or cellular damage and initiate innate immune
responses.
8. Which receptor is an example of a pattern-recognition receptor?
A. Toll-like receptor
B. T-cell receptor
C. B-cell receptor
D. Fc receptor only
Answer: A. Toll-like receptor
Rationale: Toll-like receptors recognize specific pathogen-associated molecular
patterns and activate signaling pathways that promote inflammation and
antimicrobial responses.
9. Which complement pathway can be activated directly by microbial surface
structures without requiring antibodies?
A. Classical pathway
B. Alternative pathway
, C. Antibody pathway
D. Immunoglobulin pathway
Answer: B. Alternative pathway
Rationale: The alternative complement pathway can be activated on microbial
surfaces independently of antibodies.
10. Which complement fragment is particularly important for attracting
leukocytes to sites of infection?
A. C3a
B. C5a
C. C1q
D. C9
Answer: B. C5a
Rationale: C5a is a potent inflammatory mediator and chemoattractant that
promotes recruitment and activation of leukocytes.
11. What is the primary function of the membrane attack complex?
A. Antibody production
B. T-cell maturation
C. Formation of pores in susceptible target membranes
D. Antigen presentation
Answer: C. Formation of pores in susceptible target membranes
Rationale: The terminal complement components form the membrane attack
complex, which can create membrane pores and cause target-cell lysis.
12. Which immunoglobulin is usually the first antibody isotype produced
during a primary immune response?
A. IgA
B. IgE
C. IgG
D. IgM
