About this Study Set
This study set covers Immunology through
20 practice questions.
A comprehensive set of challenging questions covering cellular immunity, humoral responses, and molecular mechanisms. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Advanced High School Immunology Assessment study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which specific cell type is responsible for the production of immunoglobulins after activation by a T-helper cell?
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A
Cytotoxic T-lymphocytes
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B
Plasma B-cells
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C
Natural Killer cells
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D
Dendritic cells
2
What is the primary function of the Major Histocompatibility Complex (MHC) class II molecules?
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A
Presenting endogenous antigens to CD8+ T-cells
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B
Presenting exogenous antigens to CD4+ T-cells
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C
Binding to antibodies to facilitate phagocytosis
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D
Directly lysing infected host cells
3
Which cytokine is primarily secreted by T-helper 1 (Th1) cells to activate macrophages?
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A
Interferon-gamma (IFN-γ)
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B
Interleukin-4 (IL-4)
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C
Interleukin-10 (IL-10)
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D
Transforming growth factor-beta (TGF-β)
4
Which immunoglobulin isotype is most abundant in human serum and is capable of crossing the placenta?
5
What is the mechanism by which Natural Killer (NK) cells identify and destroy virally infected cells?
-
A
Recognition of specific viral peptides on MHC II
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B
Detection of decreased or absent MHC class I expression
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C
Direct binding to viral surface proteins via BCRs
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D
Secretion of histamine to induce inflammation
6
Which process describes the selective survival of B-cells that produce antibodies with the highest affinity for a specific antigen?
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A
V(D)J recombination
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B
Affinity maturation
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C
Clonal deletion
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D
Class-switch recombination
7
What is the primary role of the complement system component C3b?
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A
Formation of the membrane attack complex
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B
Opsonization of pathogens
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C
Activation of mast cell degranulation
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D
Chemotaxis of eosinophils
8
Which gene rearrangement process is responsible for the immense diversity of the B-cell receptor repertoire?
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A
RNA splicing
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B
V(D)J recombination
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C
Transposition
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D
DNA methylation
9
What is the defining characteristic of the primary immune response compared to the secondary response?
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A
Shorter lag phase
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B
Higher peak concentration of IgG
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C
Dominance of IgM production
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D
Activation of memory T-cells
10
Where do T-lymphocytes undergo the process of positive and negative selection to ensure self-tolerance?
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A
Bone marrow
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B
Spleen
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C
Thymus
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D
Lymph nodes
11
Which cell type is the principal bridge between the innate and adaptive immune systems via antigen presentation?
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A
Neutrophil
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B
Dendritic cell
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C
Erythrocyte
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D
Basophil
12
Which domain of an antibody molecule determines its unique antigen-binding specificity?
-
A
Fc region
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B
Constant region
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C
Variable region
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D
Hinge region
13
What is the direct effector function of perforin released by cytotoxic T-cells?
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A
Inducing apoptosis via caspase activation
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B
Creating pores in the target cell membrane
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C
Neutralizing viral surface receptors
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D
Inhibiting bacterial protein synthesis
14
Which condition results from the failure of the immune system to distinguish between self and non-self antigens?
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A
Immunodeficiency
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B
Autoimmunity
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C
Hypersensitivity
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D
Anaphylaxis
15
What is the role of regulatory T-cells (Tregs) in the immune response?
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A
Stimulating B-cell proliferation
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B
Suppressing excessive immune responses to maintain tolerance
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C
Directly killing tumor cells
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D
Releasing histamine
16
Which antibody isotype is predominantly found in mucosal secretions such as saliva and breast milk?
17
What event triggers the release of histamine from mast cells during a Type I hypersensitivity reaction?
-
A
Binding of IgE to the Fc receptor on mast cells
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B
Direct activation by bacterial endotoxins
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C
Complement fixation by IgG
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D
Activation of T-helper 17 cells
18
Which molecule is required for the maturation of T-cells and acts as a co-receptor with the T-cell receptor (TCR)?
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A
CD3
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B
CD4 or CD8
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C
Ig-alpha and Ig-beta
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D
MHC class I
19
What is the primary purpose of the inflammatory response in innate immunity?
-
A
To neutralize toxins directly
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B
To increase vascular permeability and recruit leukocytes
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C
To produce long-lived memory cells
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D
To decrease body temperature
20
Which segment of the V(D)J recombination process is responsible for the greatest contribution to junctional diversity?
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A
Combinatorial diversity
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B
Addition of N-nucleotides by TdT
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C
Random pairing of heavy and light chains
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D
Somatic hypermutation
