Immunology Quiz: Test Your Knowledge Immunology QuizChallenge your understanding of immunology with our carefully curated quiz covering foundational to advanced concepts. This interactive set of multiple-choice questions (MCQs) includes topics like innate and adaptive immunity, antibodies, antigen presentation, hypersensitivity reactions, and immune disorders. Perfect for students, competitive exam aspirants, and microbiology enthusiasts looking to revise or reinforce their knowledge. Start learning smarter with instant feedback and explanations on LearnMicrobiology.com! NameEmail 1 / 30Which interleukin is known as the "T cell growth factor"? IL-1 IL-10 IL-6 IL-2 2 / 30Which cytokine is primarily responsible for fever? IL-1 IFN-gamma IL-4 IL-10 3 / 30Toll-like receptors (TLRs) are part of which immune system?Adaptive Passive Adaptive Innate Humoral 4 / 30Which organ is responsible for the maturation of T lymphocytes? Spleen Bone marrow Thymus Liver 5 / 30The process of central tolerance occurs in the: Bloodstream Peripheral lymph nodes Liver Thymus and bone marrow 6 / 30Which antibody is most abundant in human serum? IgM IgE IgG IgA 7 / 30Phagocytosis is carried out primarily by: Macrophages T-helper cells Mast cells B cells 8 / 30Histamine release is most closely associated with which immune response? Allergy Autoimmunity Inflammation Antibody production 9 / 30The term "opsonization" refers to: Antibody switching Lymphocyte apoptosis Antigen destruction by acid Coating of pathogens to enhance phagocytosis 10 / 30Which cell surface marker is found on all helper T cells? CD4 CD19 CD8 CD56 11 / 30Which molecule is crucial for T-cell activation along with the TCR–MHC interaction? CD40 IgE CD19 CD28 12 / 30Which is a feature of a secondary immune response? Faster and stronger antibody production Low antibody titers IgM predominance Slow onset 13 / 30Which transcription factor is activated by NF-κB in immune signaling? STAT6 p53 MyD88 NF-κB itself 14 / 30Which of the following is a component of the innate immune system? Natural killer (NK) cells Antibodies Memory B cells T cells 15 / 30Clonal selection refers to: Removal of self-reactive lymphocytes Natural killer cell activation Generation of T cell receptors Expansion of specific lymphocytes after antigen recognition 16 / 30What type of immunity is acquired through vaccination? Natural immunity Innate immunity Passive immunity Artificial active immunity 17 / 30Which type of hypersensitivity is antibody-mediated cytotoxic? Type IV Type III Type I Type II 18 / 30Which of the following diseases is an example of autoimmunity? HIV/AIDS Asthma Tuberculosis Rheumatoid arthritis 19 / 30Which of the following immunoglobulins can cross the placenta? IgA IgM IgG IgE 20 / 30The complement system enhances immunity by: Cell apoptosis Increasing T cell count Opsonization and cell lysis Antigen production 21 / 30Which of these cells produces antibodies? Dendritic cells Plasma cells T cells Macrophages 22 / 30What is the function of the J chain in immunoglobulins? Joins monomers of IgA and IgM Breaks down antigens Inhibits antibody function Enhances Fc receptor binding 23 / 30MHC class I molecules present antigens to: CD8+ T cells Macrophages CD4+ T cells B cells 24 / 30Which is a function of Regulatory T cells (Tregs)? Stimulate inflammation Kill infected cells Present antigens Suppress immune response 25 / 30Which immunoglobulin appears first during a primary immune response? IgG IgE IgA IgM 26 / 30Which of the following is NOT an antigen-presenting cell? B cell Erythrocyte Dendritic cell Macrophage 27 / 30What is the primary function of the immune system? Defense against pathogens Digestion Hormone production Oxygen transport 28 / 30Which of the following best describes antigenic drift? Inactivation of antigen Immune memory loss Minor mutations over time Sudden, major changes in antigen 29 / 30Which pathway of complement activation requires antibodies? Classical Lytic Alternative Lectin 30 / 30Which immunoglobulin is primarily involved in mucosal immunity? IgM IgG IgE IgA Your score isThe average score is 36% 0% Restart quiz
