CMSA Diploma in Allergology Dip Allerg(SA) Practice Questions - Diploma in Allergology of the College of Physicians of South Africa Dip Allerg(SA) Exam - CMSA Diploma in Allergology Dip Allerg(SA) Practice Questions - Diploma in Allergology of the College of Physicians of South Africa Dip Allerg(SA) Exam

Question 1

Which subunit combination constitutes the high-affinity IgE receptor (FcεRI) expressed on human mast cells and basophils, and which chains contain Immunoreceptor Tyrosine-based Activation Motifs (ITAMs) essential for intracellular signal transduction?

Disulfide-linked Alpha (α) homodimer, Beta (β) chain, and Gamma (γ) monomer; ITAMs are present on all three chains Alpha (α) homodimer and Beta (β) heterodimer; ITAMs are present exclusively on the α chain Single transmembrane Alpha (α) chain and two Beta (β) chains; ITAMs are present on the α and β chains Alpha (α) chain, Beta (β) chain, and a disulfide-linked Gamma (γ) homodimer; ITAMs are present on the β and γ chains

Correct Answer:

Alpha (α) chain, Beta (β) chain, and a disulfide-linked Gamma (γ) homodimer; ITAMs are present on the β and γ chains

Question 2

During T-cell dependent B-cell activation, which key cytokine signals via the STAT6 pathway to induce heavy chain class switch recombination to Immunoglobulin E (IgE)?

Interleukin-4 (IL-4) Interleukin-5 (IL-5) Interleukin-10 (IL-10) Interferon-gamma (IFN-γ)

Correct Answer:

Interleukin-4 (IL-4)

Question 3

Which mediator is stored preformed within human mast cell secretory granules and released immediately upon FcεRI cross-linking?

Leukotriene C4 (LTC4) Interleukin-13 (IL-13) Prostaglandin D2 (PGD2) Histamine

Correct Answer:

Histamine

Question 4

According to the Coombs and Gell classification of hypersensitivity reactions, which immunologic mechanism defines a Type I hypersensitivity reaction?

Sensitized T-lymphocyte antigen recognition leading to cytokine release and delayed macrophage activation IgG or IgM antibody binding to fixed cell-surface antigens causing complement-mediated cytotoxicity Immune complex deposition in vascular beds triggering neutrophil activation and complement consumption IgE antibody-mediated soluble antigen binding on tissue mast cells leading to immediate mediator release

Correct Answer:

IgE antibody-mediated soluble antigen binding on tissue mast cells leading to immediate mediator release

Question 5

Which surface phenotype and master transcription factor characterize peripheral Regulatory T cells (Tregs) that actively maintain peripheral immune tolerance and suppress allergen-specific Th2 responses?

CD8+ CD28+ T-bet+ CD3+ CD56+ RORγt+ CD4+ CD25+ FoxP3+ CD4+ CD127+ GATA3+

Correct Answer:

CD4+ CD25+ FoxP3+

Question 1

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Prepare with the CMSA Diploma in Allergology Dip Allerg(SA) Practice Questions - Diploma in Allergology of the College of Physicians of South Africa Dip Allerg(SA) Exam practice quiz. This question bank includes 100 questions covering allergic, asthma, cells, severe, and year-old. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CMSA Diploma in Allergology Dip Allerg(SA) Practice Questions - Diploma in Allergology of the College of Physicians of South Africa Dip Allerg(SA) Exam

This practice set contains 100 questions from the matching question bank and focuses on allergic, asthma, cells, severe, and year-old. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

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CMSA Diploma in Allergology Dip Allerg(SA) Practice Questions - Diploma in Allergology of the College of Physicians of South Africa Dip Allerg(SA) Exam

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