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Advanced Human Immunology

Immunology

A rigorous examination of human immune system mechanisms, cellular functions, and molecular pathways.

biology health science

8 Questions Hard Ages 18+ Oct 19, 2026

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About this Study Set

This study set covers Immunology through 8 practice questions. A rigorous examination of human immune system mechanisms, cellular functions, and molecular pathways. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Advanced Human Immunology study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which specific immunoglobulin class is the first to be secreted during a primary immune response and functions as a pentamer in its secreted form?

A IgG
B IgA
C IgM
D IgD

2 What is the primary function of the Aire (autoimmune regulator) protein expressed in the thymic medullary epithelial cells?

A Inducing apoptosis in self-reactive T cells
B Promoting the survival of regulatory T cells
C Regulating the expression of peripheral tissue-restricted antigens for negative selection
D Enhancing MHC class II presentation of exogenous antigens

3 During B-cell development, which enzyme is responsible for the introduction of N-nucleotides at the junctions of V, D, and J gene segments?

A RAG-1
B TdT (Terminal deoxynucleotidyl transferase)
C DNA Polymerase epsilon
D AID (Activation-induced cytidine deaminase)

4 Which cytokine is primarily responsible for the differentiation of naive CD4+ T cells into the Th17 subset in humans?

A IL-4
B IFN-gamma
C TGF-beta and IL-6
D IL-12

5 What is the role of the TAP (Transporter associated with Antigen Processing) protein in the MHC class I pathway?

A Degradation of cytosolic proteins into peptides
B Stabilization of the MHC class I alpha chain
C Transport of peptides from the cytosol into the endoplasmic reticulum
D Loading of MHC class I molecules with exogenous antigens

6 Which complement pathway is initiated by the binding of C1q to antigen-antibody complexes?

A Alternative pathway
B Lectin pathway
C Classical pathway
D Terminal pathway

7 What is the specific phenotypic marker combination that characterizes human regulatory T cells (Tregs)?

A CD3+, CD4+, CD8+
B CD3+, CD4+, CD25+, Foxp3+
C CD3+, CD8+, CD28+
D CD3+, CD4+, CD40L+

8 Which cell type is the primary source of the cytokine IL-2 in the early stages of an adaptive immune response?

A Activated CD8+ T cells
B Activated CD4+ T cells
C Follicular dendritic cells
D Natural Killer cells

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