Test Bank for The Immune System, Fifth Edition by
Peter Parham A Comprehensive 150-Question
Multiple-Choice Examination Covering Innate
Immunity, Adaptive Immunity, B and T Lymphocyte
Development, Antibody Structure, Mucosal
Immunity, Immunological Memory, Vaccination,
Transplantation, Allergy, Autoimmunity, and
Cancer Immunology
Table of Contents
Chapter Title Questions
1 Elements of the Immune System and Their Roles in Defense 10
2 Innate Immunity: The Immediate Response to Infection 10
3 Innate Immunity: The Induced Response to Infection 10
4 Antibody Structure and the Generation of B-Cell Diversity 10
5 Antigen Recognition by T Lymphocytes 10
6 The Development of B Lymphocytes 10
7 The Development of T Lymphocytes 10
8 T Cell–Mediated Immunity 10
9 Immunity Mediated by B Cells and Antibodies 10
10 Preventing Infection at Mucosal Surfaces 8
,Chapter Title Questions
11 Immunological Memory and Vaccination 8
12 Coevolution of Innate and Adaptive Immunity 8
13 Failures of the Body's Defenses 8
14 IgE-Mediated Immunity and Allergy 8
15 Transplantation of Tissues and Organs 8
Disruption of Healthy Tissue by the Adaptive Immune
16 8
Response
17 Cancer and Its Interactions with the Immune System 8
Chapter 1: Elements of the Immune System and Their Roles in Defense
🟢 Q1. The primary function of the immune system is to:
A. Regulate metabolic processes throughout the body
B. Defend against pathogens and eliminate infected or transformed cells 🔴🔴
C. Produce hormones for endocrine signaling
D. Facilitate nutrient absorption in the gastrointestinal tract
Rationale: The immune system's primary function is defense against pathogens (bacteria, viruses, fungi,
parasites) and elimination of infected or transformed cells, as established in Parham's foundational
overview.
🟢 Q2. Which characteristic best distinguishes innate immunity from adaptive immunity?
A. Innate immunity is specific and memory-based, while adaptive immunity is non-specific
B. Innate immunity is non-specific and immediate, while adaptive immunity is characterized by
specificity and memory 🔴🔴
C. Innate immunity requires prior exposure to a pathogen, while adaptive immunity does not
D. Innate immunity is mediated exclusively by antibodies, while adaptive immunity is mediated by
phagocytes
,Rationale: Innate immunity provides immediate, non-specific defense without prior exposure, whereas
adaptive immunity develops antigen specificity and immunological memory after initial pathogen
encounter.
🟢 Q3. The skin serves as part of the immune defense by functioning as:
A. A site for antibody production
B. A physical barrier and first line of defense against pathogen entry 🔴🔴
C. A location for T-cell maturation
D. An organ that produces complement proteins
Rationale: The skin acts as a physical barrier constituting the first line of defense, preventing pathogen
entry; it also contains antimicrobial peptides and resident immune cells that contribute to innate
immunity.
🟢 Q4. Dendritic cells are critical in immune defense because they:
A. Produce antibodies directly against pathogens
B. Bridge innate and adaptive immunity by capturing antigens and presenting them to T cells 🔴🔴
C. Function exclusively as phagocytes without antigen presentation capabilities
D. Mature exclusively in the thymus and produce cytokines only
Rationale: Dendritic cells are professional antigen-presenting cells that capture pathogens in peripheral
tissues, process antigens, and migrate to lymph nodes to activate naive T cells, thereby bridging innate
and adaptive immunity.
🟢 Q5. Which cell type is NOT considered part of the innate immune system?
A. Neutrophils
B. Macrophages
C. Naive B lymphocytes 🔴🔴
D. Natural killer (NK) cells
Rationale: Naive B lymphocytes are components of the adaptive immune system; neutrophils,
macrophages, and NK cells are innate immune cells that respond immediately without antigen-specific
recognition.
🟢 Q6. The lymphatic system functions in immune defense primarily by:
A. Producing red blood cells
B. Transporting lymphocytes, antigens, and antigen-presenting cells between tissues and lymphoid
organs 🔴🔴
C. Regulating blood glucose levels
D. Filtering hormones from the bloodstream
Rationale: The lymphatic system transports lymph fluid containing lymphocytes, antigens, and antigen-
presenting cells, enabling immune surveillance and facilitating encounters between antigens and
lymphocytes in lymphoid organs.
🟢 Q7. Which of the following is a characteristic of adaptive immunity but NOT innate immunity?
, A. Rapid response within minutes to hours
B. Recognition of conserved pathogen structures
C. Immunological memory enabling faster responses upon re-exposure 🔴🔴
D. Activation of complement proteins
Rationale: Immunological memory is a hallmark of adaptive immunity, allowing for a more rapid and
robust response upon subsequent encounters with the same pathogen.
🟢 Q8. Commensal microorganisms contribute to host defense by:
A. Directly killing pathogenic bacteria through phagocytosis
B. Competing with pathogens for nutrients and space on mucosal surfaces 🔴🔴
C. Producing antibodies that neutralize toxins
D. Activating complement through the classical pathway
Rationale: Commensal microorganisms inhabit healthy human bodies and provide protection by
occupying niches and consuming resources that would otherwise be available to pathogens.
🟢 Q9. Hematopoiesis refers to the process by which:
A. Antibodies are generated in response to antigen
B. All blood cells, including immune cells, are produced from hematopoietic stem cells 🔴🔴
C. T cells are educated in the thymus
D. Complement proteins are synthesized in the liver
Rationale: Hematopoiesis is the formation of blood cellular components, where all immune cells
originate from self-renewing hematopoietic stem cells in the bone marrow.
🟢 Q10. The clonal selection theory states that:
A. Each lymphocyte expresses multiple antigen receptors of different specificities
B. Antigen selects and activates lymphocytes with pre-existing receptors specific for that antigen 🔴🔴
C. Lymphocytes are activated by non-specific mitogens during infection
D. Only T cells undergo clonal selection
Rationale: Clonal selection describes how antigens selectively activate lymphocytes that already express
receptors specific for that antigen, leading to their proliferation and differentiation.
Chapter 2: Innate Immunity: The Immediate Response to Infection
🟢 Q11. The complement system is activated by all of the following EXCEPT:
A. The classical pathway initiated by antibody-antigen complexes
B. The alternative pathway initiated by pathogen surfaces
C. The lectin pathway initiated by mannose-binding lectin
D. The intrinsic pathway initiated by mitochondrial DNA 🔴🔴
Peter Parham A Comprehensive 150-Question
Multiple-Choice Examination Covering Innate
Immunity, Adaptive Immunity, B and T Lymphocyte
Development, Antibody Structure, Mucosal
Immunity, Immunological Memory, Vaccination,
Transplantation, Allergy, Autoimmunity, and
Cancer Immunology
Table of Contents
Chapter Title Questions
1 Elements of the Immune System and Their Roles in Defense 10
2 Innate Immunity: The Immediate Response to Infection 10
3 Innate Immunity: The Induced Response to Infection 10
4 Antibody Structure and the Generation of B-Cell Diversity 10
5 Antigen Recognition by T Lymphocytes 10
6 The Development of B Lymphocytes 10
7 The Development of T Lymphocytes 10
8 T Cell–Mediated Immunity 10
9 Immunity Mediated by B Cells and Antibodies 10
10 Preventing Infection at Mucosal Surfaces 8
,Chapter Title Questions
11 Immunological Memory and Vaccination 8
12 Coevolution of Innate and Adaptive Immunity 8
13 Failures of the Body's Defenses 8
14 IgE-Mediated Immunity and Allergy 8
15 Transplantation of Tissues and Organs 8
Disruption of Healthy Tissue by the Adaptive Immune
16 8
Response
17 Cancer and Its Interactions with the Immune System 8
Chapter 1: Elements of the Immune System and Their Roles in Defense
🟢 Q1. The primary function of the immune system is to:
A. Regulate metabolic processes throughout the body
B. Defend against pathogens and eliminate infected or transformed cells 🔴🔴
C. Produce hormones for endocrine signaling
D. Facilitate nutrient absorption in the gastrointestinal tract
Rationale: The immune system's primary function is defense against pathogens (bacteria, viruses, fungi,
parasites) and elimination of infected or transformed cells, as established in Parham's foundational
overview.
🟢 Q2. Which characteristic best distinguishes innate immunity from adaptive immunity?
A. Innate immunity is specific and memory-based, while adaptive immunity is non-specific
B. Innate immunity is non-specific and immediate, while adaptive immunity is characterized by
specificity and memory 🔴🔴
C. Innate immunity requires prior exposure to a pathogen, while adaptive immunity does not
D. Innate immunity is mediated exclusively by antibodies, while adaptive immunity is mediated by
phagocytes
,Rationale: Innate immunity provides immediate, non-specific defense without prior exposure, whereas
adaptive immunity develops antigen specificity and immunological memory after initial pathogen
encounter.
🟢 Q3. The skin serves as part of the immune defense by functioning as:
A. A site for antibody production
B. A physical barrier and first line of defense against pathogen entry 🔴🔴
C. A location for T-cell maturation
D. An organ that produces complement proteins
Rationale: The skin acts as a physical barrier constituting the first line of defense, preventing pathogen
entry; it also contains antimicrobial peptides and resident immune cells that contribute to innate
immunity.
🟢 Q4. Dendritic cells are critical in immune defense because they:
A. Produce antibodies directly against pathogens
B. Bridge innate and adaptive immunity by capturing antigens and presenting them to T cells 🔴🔴
C. Function exclusively as phagocytes without antigen presentation capabilities
D. Mature exclusively in the thymus and produce cytokines only
Rationale: Dendritic cells are professional antigen-presenting cells that capture pathogens in peripheral
tissues, process antigens, and migrate to lymph nodes to activate naive T cells, thereby bridging innate
and adaptive immunity.
🟢 Q5. Which cell type is NOT considered part of the innate immune system?
A. Neutrophils
B. Macrophages
C. Naive B lymphocytes 🔴🔴
D. Natural killer (NK) cells
Rationale: Naive B lymphocytes are components of the adaptive immune system; neutrophils,
macrophages, and NK cells are innate immune cells that respond immediately without antigen-specific
recognition.
🟢 Q6. The lymphatic system functions in immune defense primarily by:
A. Producing red blood cells
B. Transporting lymphocytes, antigens, and antigen-presenting cells between tissues and lymphoid
organs 🔴🔴
C. Regulating blood glucose levels
D. Filtering hormones from the bloodstream
Rationale: The lymphatic system transports lymph fluid containing lymphocytes, antigens, and antigen-
presenting cells, enabling immune surveillance and facilitating encounters between antigens and
lymphocytes in lymphoid organs.
🟢 Q7. Which of the following is a characteristic of adaptive immunity but NOT innate immunity?
, A. Rapid response within minutes to hours
B. Recognition of conserved pathogen structures
C. Immunological memory enabling faster responses upon re-exposure 🔴🔴
D. Activation of complement proteins
Rationale: Immunological memory is a hallmark of adaptive immunity, allowing for a more rapid and
robust response upon subsequent encounters with the same pathogen.
🟢 Q8. Commensal microorganisms contribute to host defense by:
A. Directly killing pathogenic bacteria through phagocytosis
B. Competing with pathogens for nutrients and space on mucosal surfaces 🔴🔴
C. Producing antibodies that neutralize toxins
D. Activating complement through the classical pathway
Rationale: Commensal microorganisms inhabit healthy human bodies and provide protection by
occupying niches and consuming resources that would otherwise be available to pathogens.
🟢 Q9. Hematopoiesis refers to the process by which:
A. Antibodies are generated in response to antigen
B. All blood cells, including immune cells, are produced from hematopoietic stem cells 🔴🔴
C. T cells are educated in the thymus
D. Complement proteins are synthesized in the liver
Rationale: Hematopoiesis is the formation of blood cellular components, where all immune cells
originate from self-renewing hematopoietic stem cells in the bone marrow.
🟢 Q10. The clonal selection theory states that:
A. Each lymphocyte expresses multiple antigen receptors of different specificities
B. Antigen selects and activates lymphocytes with pre-existing receptors specific for that antigen 🔴🔴
C. Lymphocytes are activated by non-specific mitogens during infection
D. Only T cells undergo clonal selection
Rationale: Clonal selection describes how antigens selectively activate lymphocytes that already express
receptors specific for that antigen, leading to their proliferation and differentiation.
Chapter 2: Innate Immunity: The Immediate Response to Infection
🟢 Q11. The complement system is activated by all of the following EXCEPT:
A. The classical pathway initiated by antibody-antigen complexes
B. The alternative pathway initiated by pathogen surfaces
C. The lectin pathway initiated by mannose-binding lectin
D. The intrinsic pathway initiated by mitochondrial DNA 🔴🔴
