BIOL 3201
IMMUNOLOGY
FINAL EXAM PRACTICE - SET 2
150 cumulative questions across all seven course modules
150 7 END
QUESTIONS MODULES ANSWER KEY
Format
Questions appear first without visible answers. A compact answer key and detailed explanations follow the exam section.
Coverage
Immune-system overview; immune cells and organs; innate immunity; B cells and antibodies; TCR/MHC and antigen
presentation; T-cell development and activation; healing, hypersensitivity and memory.
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,BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
Final Exam Practice - Questions 1-150
Choose the single best answer for each item. This set deliberately mixes modules throughout the exam so that concepts must be recognized in
context rather than by chapter order. Answers are withheld until the end.
1. Which statement best describes Pattern-recognition receptor?
A. Detects conserved microbial patterns or damage-associated signals and triggers innate responses
B. Is a potent complement-derived inflammatory mediator and chemoattractant
C. Is the terminal complement pore-forming complex that can lyse susceptible target membranes
D. Induces an antiviral state in neighboring cells and supports antiviral immune responses
Innate Immunity
2. Which statement best describes T-cell receptor?
A. Recognizes peptide-MHC complexes rather than free native antigen
B. Transduces intracellular signals after antigen recognition by the T-cell receptor
C. Presents mainly cytosolic peptides to CD8 T cells and is expressed on most nucleated cells
D. Presents mainly vesicular/extracellularly derived peptides to CD4 T cells and is prominent on professional APCs
TCR/MHC & Presentation
3. Which statement best describes B-cell receptor?
A. Is an antibody-secreting effector B cell specialized for high-rate immunoglobulin production
B. Is a long-lived antigen-experienced B cell that responds rapidly upon re-exposure
C. Is membrane immunoglobulin associated with signaling proteins and recognizes native antigen
D. Uses helper T-cell signals to support robust proliferation, class switching, affinity maturation, and memory formation
B Cells & Antibodies
4. Which statement best describes Positive selection?
A. Promotes thymic expression of many tissue-restricted self antigens for central tolerance
B. Provides a second activation signal, such as CD28 binding B7 molecules, in addition to TCR recognition
C. Preserves developing thymocytes that can recognize self-MHC with appropriate low-to-moderate affinity
D. Promotes proliferation and survival of activated T cells and supports clonal expansion
T-Cell Development & Activation
5. Which statement best describes Hematopoietic stem cell?
A. Is the multipotent bone-marrow precursor that gives rise to all blood cell lineages
B. Supports T-cell development, positive selection, and much of central T-cell tolerance
C. Filters lymph and organizes encounters among antigen, antigen-presenting cells, and lymphocytes
D. Filters blood and supports immune responses to blood-borne antigens
Cells & Organs
6. Which statement best describes Innate immunity?
A. Responds rapidly using germline-encoded receptors and does not require prior exposure
B. Uses highly specific antigen receptors generated by somatic gene rearrangement and forms immunological memory
C. Activates lymphocytes whose receptors recognize a particular antigen, followed by proliferation and differentiation
D. Allows a secondary response to occur faster and often more strongly than the primary response
Overview
7. Which statement best describes Type I hypersensitivity?
A. Is an immediate reaction driven largely by antigen-triggered cross-linking of IgE on mast cells
B. Is antibody-mediated injury directed against cell-surface or extracellular-matrix antigens
C. Results from immune-complex deposition and inflammatory activation in tissues
D. Is primarily T-cell mediated and typically develops more slowly than immediate antibody-mediated allergy
Healing, Hypersensitivity & Memory
8. A researcher selectively disrupts B-cell receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. BCR and TCR diversity would be greatly reduced
B. Development of diverse B- and T-cell antigen receptors would fail
C. Early complement-fixing antibody activity in a primary response would decrease
D. Antigen-specific activation of B cells would be impaired
B Cells & Antibodies
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,BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
9. A researcher selectively disrupts T-cell receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Premature peptide loading onto MHC-II in the ER and proper trafficking would be disrupted
B. T cells would lose their primary mechanism for antigen-specific recognition
C. The regulated transition from invariant chain to antigenic peptide on MHC-II would be altered
D. Efficient peptide exchange and stable MHC-II peptide loading would decline
TCR/MHC & Presentation
10. A researcher selectively disrupts Pattern-recognition receptor while leaving the rest of the immune system
intact. Which outcome is most directly expected?
A. Direct complement-mediated lysis of susceptible microbes would be reduced
B. Innate sensing of infection or tissue damage would be reduced
C. Viral replication would face less early intracellular restriction
D. Processing of key inflammatory cytokines such as IL-1β would be reduced
Innate Immunity
11. A researcher selectively disrupts Positive selection while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Defense against some extracellular bacteria and fungi at barriers would be impaired
B. Autoimmune and inflammatory responses would be more difficult to restrain
C. Elimination of many virus-infected or transformed cells would be impaired
D. Mature T cells would not be efficiently restricted to the host’s MHC molecules
T-Cell Development & Activation
12. A researcher selectively disrupts Hematopoietic stem cell while leaving the rest of the immune system intact.
Which outcome is most directly expected?
A. B-cell generation and blood-cell production would be impaired
B. Production of multiple immune-cell lineages would be disrupted
C. Maturation of a functional self-tolerant T-cell repertoire would be disrupted
D. Immune responses to antigens arriving from peripheral tissues would be less efficiently initiated
Cells & Organs
13. Which statement best describes V(D)J recombination?
A. Assembles variable-region gene segments to create diverse antigen receptors
B. Is membrane immunoglobulin associated with signaling proteins and recognizes native antigen
C. Initiate DNA cleavage steps required for V(D)J recombination
D. Is the first antibody isotype commonly produced in a primary response and is efficient at activating complement when multimeric
B Cells & Antibodies
14. Which statement best describes CD3 complex?
A. Degrades many cytosolic proteins into peptides that can feed the MHC-I pathway
B. Moves peptides from the cytosol into the endoplasmic reticulum for MHC-I loading
C. Transduces intracellular signals after antigen recognition by the T-cell receptor
D. Occupies the peptide-binding groove of newly synthesized MHC-II and targets it toward endosomal compartments
TCR/MHC & Presentation
15. Which statement best describes Toll-like receptor?
A. Is a cytosolic protein complex that can activate caspase-1 and promote IL-1-family cytokine maturation
B. Slows leukocytes along activated endothelium before firm adhesion and transmigration
C. Is a pattern-recognition receptor family that detects characteristic microbial products in specific cellular locations
D. Raises the regulated body-temperature set point during inflammation and can support host defense
Innate Immunity
16. A researcher selectively disrupts Toll-like receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Innate sensing of infection or tissue damage would be reduced
B. Microbial detection by pattern-recognition systems would lose an important class of ligands
C. Sterile inflammatory sensing after tissue damage would be reduced
D. Cytokine and antimicrobial responses to several microbial patterns would be blunted
Innate Immunity
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, BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
17. A researcher selectively disrupts CD3 complex while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Priming of CD8 T cells against some antigens not directly infecting dendritic cells would be reduced
B. Population-level breadth of peptide presentation would be reduced
C. T cells would lose their primary mechanism for antigen-specific recognition
D. TCR binding would be poorly coupled to T-cell activation
TCR/MHC & Presentation
18. A researcher selectively disrupts V(D)J recombination while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Mast-cell sensitization in type I hypersensitivity would be reduced
B. BCR and TCR diversity would be greatly reduced
C. B cells would have less ability to change antibody effector function without changing specificity
D. The substrate for affinity maturation would be reduced
B Cells & Antibodies
19. Which statement best describes Negative selection?
A. Removes many thymocytes that bind self peptide-MHC too strongly
B. Supports cell-mediated immunity and macrophage activation, especially through cytokines such as IFN-γ
C. Supports type 2 immunity, including responses involving eosinophils and IgE
D. Promotes barrier inflammation and recruitment of neutrophils, often through IL-17-family cytokines
T-Cell Development & Activation
20. Which statement best describes Neutrophil?
A. Is the multipotent bone-marrow precursor that gives rise to all blood cell lineages
B. Is a tissue phagocyte that removes microbes and debris and produces inflammatory mediators
C. Is a short-lived phagocyte rapidly recruited to many acute bacterial infections
D. Is a professional antigen-presenting cell especially effective at priming naive T cells
Cells & Organs
21. A researcher selectively disrupts Innate immunity while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Antigen-specific lymphocyte expansion after recognition would be reduced
B. The earliest broad defense against invading microbes would be weakened
C. A previously encountered pathogen would be handled more like a first exposure
D. The risk of autoimmune tissue injury would increase
Overview
22. A researcher selectively disrupts Type I hypersensitivity while leaving the rest of the immune system intact.
Which outcome is most directly expected?
A. Repeat exposure would no longer produce the typical accelerated recall pattern
B. Rapid allergic degranulation responses would be reduced
C. Antibody-dependent damage to particular cells or tissues would be reduced
D. Immune-complex-driven inflammation would be reduced
Healing, Hypersensitivity & Memory
23. Which statement best describes RAG proteins?
A. Is the major serum antibody class in many secondary responses and supports neutralization, opsonization, and other effector
functions
B. Is specialized for mucosal secretions and helps protect epithelial surfaces
C. Initiate DNA cleavage steps required for V(D)J recombination
D. Binds high-affinity receptors on mast cells and participates in immediate hypersensitivity and anti-helminth responses
B Cells & Antibodies
24. Which statement best describes MHC class I?
A. Presents mainly cytosolic peptides to CD8 T cells and is expressed on most nucleated cells
B. Is the invariant-chain remnant that remains in the MHC-II groove until peptide exchange
C. Promotes removal of CLIP and favors loading of suitable peptides onto MHC-II
D. Binds MHC-II and supports signaling in helper T cells
TCR/MHC & Presentation
PassPoint Pro | Original cumulative practice material Page 4
IMMUNOLOGY
FINAL EXAM PRACTICE - SET 2
150 cumulative questions across all seven course modules
150 7 END
QUESTIONS MODULES ANSWER KEY
Format
Questions appear first without visible answers. A compact answer key and detailed explanations follow the exam section.
Coverage
Immune-system overview; immune cells and organs; innate immunity; B cells and antibodies; TCR/MHC and antigen
presentation; T-cell development and activation; healing, hypersensitivity and memory.
PASSPOINT PRO
,BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
Final Exam Practice - Questions 1-150
Choose the single best answer for each item. This set deliberately mixes modules throughout the exam so that concepts must be recognized in
context rather than by chapter order. Answers are withheld until the end.
1. Which statement best describes Pattern-recognition receptor?
A. Detects conserved microbial patterns or damage-associated signals and triggers innate responses
B. Is a potent complement-derived inflammatory mediator and chemoattractant
C. Is the terminal complement pore-forming complex that can lyse susceptible target membranes
D. Induces an antiviral state in neighboring cells and supports antiviral immune responses
Innate Immunity
2. Which statement best describes T-cell receptor?
A. Recognizes peptide-MHC complexes rather than free native antigen
B. Transduces intracellular signals after antigen recognition by the T-cell receptor
C. Presents mainly cytosolic peptides to CD8 T cells and is expressed on most nucleated cells
D. Presents mainly vesicular/extracellularly derived peptides to CD4 T cells and is prominent on professional APCs
TCR/MHC & Presentation
3. Which statement best describes B-cell receptor?
A. Is an antibody-secreting effector B cell specialized for high-rate immunoglobulin production
B. Is a long-lived antigen-experienced B cell that responds rapidly upon re-exposure
C. Is membrane immunoglobulin associated with signaling proteins and recognizes native antigen
D. Uses helper T-cell signals to support robust proliferation, class switching, affinity maturation, and memory formation
B Cells & Antibodies
4. Which statement best describes Positive selection?
A. Promotes thymic expression of many tissue-restricted self antigens for central tolerance
B. Provides a second activation signal, such as CD28 binding B7 molecules, in addition to TCR recognition
C. Preserves developing thymocytes that can recognize self-MHC with appropriate low-to-moderate affinity
D. Promotes proliferation and survival of activated T cells and supports clonal expansion
T-Cell Development & Activation
5. Which statement best describes Hematopoietic stem cell?
A. Is the multipotent bone-marrow precursor that gives rise to all blood cell lineages
B. Supports T-cell development, positive selection, and much of central T-cell tolerance
C. Filters lymph and organizes encounters among antigen, antigen-presenting cells, and lymphocytes
D. Filters blood and supports immune responses to blood-borne antigens
Cells & Organs
6. Which statement best describes Innate immunity?
A. Responds rapidly using germline-encoded receptors and does not require prior exposure
B. Uses highly specific antigen receptors generated by somatic gene rearrangement and forms immunological memory
C. Activates lymphocytes whose receptors recognize a particular antigen, followed by proliferation and differentiation
D. Allows a secondary response to occur faster and often more strongly than the primary response
Overview
7. Which statement best describes Type I hypersensitivity?
A. Is an immediate reaction driven largely by antigen-triggered cross-linking of IgE on mast cells
B. Is antibody-mediated injury directed against cell-surface or extracellular-matrix antigens
C. Results from immune-complex deposition and inflammatory activation in tissues
D. Is primarily T-cell mediated and typically develops more slowly than immediate antibody-mediated allergy
Healing, Hypersensitivity & Memory
8. A researcher selectively disrupts B-cell receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. BCR and TCR diversity would be greatly reduced
B. Development of diverse B- and T-cell antigen receptors would fail
C. Early complement-fixing antibody activity in a primary response would decrease
D. Antigen-specific activation of B cells would be impaired
B Cells & Antibodies
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,BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
9. A researcher selectively disrupts T-cell receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Premature peptide loading onto MHC-II in the ER and proper trafficking would be disrupted
B. T cells would lose their primary mechanism for antigen-specific recognition
C. The regulated transition from invariant chain to antigenic peptide on MHC-II would be altered
D. Efficient peptide exchange and stable MHC-II peptide loading would decline
TCR/MHC & Presentation
10. A researcher selectively disrupts Pattern-recognition receptor while leaving the rest of the immune system
intact. Which outcome is most directly expected?
A. Direct complement-mediated lysis of susceptible microbes would be reduced
B. Innate sensing of infection or tissue damage would be reduced
C. Viral replication would face less early intracellular restriction
D. Processing of key inflammatory cytokines such as IL-1β would be reduced
Innate Immunity
11. A researcher selectively disrupts Positive selection while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Defense against some extracellular bacteria and fungi at barriers would be impaired
B. Autoimmune and inflammatory responses would be more difficult to restrain
C. Elimination of many virus-infected or transformed cells would be impaired
D. Mature T cells would not be efficiently restricted to the host’s MHC molecules
T-Cell Development & Activation
12. A researcher selectively disrupts Hematopoietic stem cell while leaving the rest of the immune system intact.
Which outcome is most directly expected?
A. B-cell generation and blood-cell production would be impaired
B. Production of multiple immune-cell lineages would be disrupted
C. Maturation of a functional self-tolerant T-cell repertoire would be disrupted
D. Immune responses to antigens arriving from peripheral tissues would be less efficiently initiated
Cells & Organs
13. Which statement best describes V(D)J recombination?
A. Assembles variable-region gene segments to create diverse antigen receptors
B. Is membrane immunoglobulin associated with signaling proteins and recognizes native antigen
C. Initiate DNA cleavage steps required for V(D)J recombination
D. Is the first antibody isotype commonly produced in a primary response and is efficient at activating complement when multimeric
B Cells & Antibodies
14. Which statement best describes CD3 complex?
A. Degrades many cytosolic proteins into peptides that can feed the MHC-I pathway
B. Moves peptides from the cytosol into the endoplasmic reticulum for MHC-I loading
C. Transduces intracellular signals after antigen recognition by the T-cell receptor
D. Occupies the peptide-binding groove of newly synthesized MHC-II and targets it toward endosomal compartments
TCR/MHC & Presentation
15. Which statement best describes Toll-like receptor?
A. Is a cytosolic protein complex that can activate caspase-1 and promote IL-1-family cytokine maturation
B. Slows leukocytes along activated endothelium before firm adhesion and transmigration
C. Is a pattern-recognition receptor family that detects characteristic microbial products in specific cellular locations
D. Raises the regulated body-temperature set point during inflammation and can support host defense
Innate Immunity
16. A researcher selectively disrupts Toll-like receptor while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Innate sensing of infection or tissue damage would be reduced
B. Microbial detection by pattern-recognition systems would lose an important class of ligands
C. Sterile inflammatory sensing after tissue damage would be reduced
D. Cytokine and antimicrobial responses to several microbial patterns would be blunted
Innate Immunity
PassPoint Pro | Original cumulative practice material Page 3
, BIOL 3201 IMMUNOLOGY | FINAL EXAM PRACTICE - SET 2
17. A researcher selectively disrupts CD3 complex while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Priming of CD8 T cells against some antigens not directly infecting dendritic cells would be reduced
B. Population-level breadth of peptide presentation would be reduced
C. T cells would lose their primary mechanism for antigen-specific recognition
D. TCR binding would be poorly coupled to T-cell activation
TCR/MHC & Presentation
18. A researcher selectively disrupts V(D)J recombination while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Mast-cell sensitization in type I hypersensitivity would be reduced
B. BCR and TCR diversity would be greatly reduced
C. B cells would have less ability to change antibody effector function without changing specificity
D. The substrate for affinity maturation would be reduced
B Cells & Antibodies
19. Which statement best describes Negative selection?
A. Removes many thymocytes that bind self peptide-MHC too strongly
B. Supports cell-mediated immunity and macrophage activation, especially through cytokines such as IFN-γ
C. Supports type 2 immunity, including responses involving eosinophils and IgE
D. Promotes barrier inflammation and recruitment of neutrophils, often through IL-17-family cytokines
T-Cell Development & Activation
20. Which statement best describes Neutrophil?
A. Is the multipotent bone-marrow precursor that gives rise to all blood cell lineages
B. Is a tissue phagocyte that removes microbes and debris and produces inflammatory mediators
C. Is a short-lived phagocyte rapidly recruited to many acute bacterial infections
D. Is a professional antigen-presenting cell especially effective at priming naive T cells
Cells & Organs
21. A researcher selectively disrupts Innate immunity while leaving the rest of the immune system intact. Which
outcome is most directly expected?
A. Antigen-specific lymphocyte expansion after recognition would be reduced
B. The earliest broad defense against invading microbes would be weakened
C. A previously encountered pathogen would be handled more like a first exposure
D. The risk of autoimmune tissue injury would increase
Overview
22. A researcher selectively disrupts Type I hypersensitivity while leaving the rest of the immune system intact.
Which outcome is most directly expected?
A. Repeat exposure would no longer produce the typical accelerated recall pattern
B. Rapid allergic degranulation responses would be reduced
C. Antibody-dependent damage to particular cells or tissues would be reduced
D. Immune-complex-driven inflammation would be reduced
Healing, Hypersensitivity & Memory
23. Which statement best describes RAG proteins?
A. Is the major serum antibody class in many secondary responses and supports neutralization, opsonization, and other effector
functions
B. Is specialized for mucosal secretions and helps protect epithelial surfaces
C. Initiate DNA cleavage steps required for V(D)J recombination
D. Binds high-affinity receptors on mast cells and participates in immediate hypersensitivity and anti-helminth responses
B Cells & Antibodies
24. Which statement best describes MHC class I?
A. Presents mainly cytosolic peptides to CD8 T cells and is expressed on most nucleated cells
B. Is the invariant-chain remnant that remains in the MHC-II groove until peptide exchange
C. Promotes removal of CLIP and favors loading of suitable peptides onto MHC-II
D. Binds MHC-II and supports signaling in helper T cells
TCR/MHC & Presentation
PassPoint Pro | Original cumulative practice material Page 4
