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 / 30Histamine release is most closely associated with which immune response? Allergy Autoimmunity Antibody production Inflammation 2 / 30Which of the following is NOT an antigen-presenting cell? B cell Macrophage Erythrocyte Dendritic cell 3 / 30MHC class I molecules present antigens to: CD8+ T cells CD4+ T cells B cells Macrophages 4 / 30Which pathway of complement activation requires antibodies? Lytic Alternative Classical Lectin 5 / 30What is the function of the J chain in immunoglobulins? Joins monomers of IgA and IgM Inhibits antibody function Breaks down antigens Enhances Fc receptor binding 6 / 30Which type of hypersensitivity is antibody-mediated cytotoxic? Type III Type II Type I Type IV 7 / 30Which interleukin is known as the "T cell growth factor"? IL-1 IL-10 IL-6 IL-2 8 / 30Which transcription factor is activated by NF-κB in immune signaling? p53 NF-κB itself STAT6 MyD88 9 / 30Toll-like receptors (TLRs) are part of which immune system?Adaptive Innate Passive Adaptive Humoral 10 / 30Which of the following immunoglobulins can cross the placenta? IgG IgM IgA IgE 11 / 30What is the primary function of the immune system? Defense against pathogens Digestion Hormone production Oxygen transport 12 / 30Which cytokine is primarily responsible for fever? IL-4 IFN-gamma IL-1 IL-10 13 / 30The process of central tolerance occurs in the: Thymus and bone marrow Bloodstream Peripheral lymph nodes Liver 14 / 30Phagocytosis is carried out primarily by: Mast cells T-helper cells B cells Macrophages 15 / 30Which cell surface marker is found on all helper T cells? CD56 CD19 CD8 CD4 16 / 30The complement system enhances immunity by: Increasing T cell count Antigen production Opsonization and cell lysis Cell apoptosis 17 / 30Which organ is responsible for the maturation of T lymphocytes? Spleen Bone marrow Liver Thymus 18 / 30Which immunoglobulin is primarily involved in mucosal immunity? IgA IgG IgM IgE 19 / 30The term "opsonization" refers to: Antigen destruction by acid Coating of pathogens to enhance phagocytosis Lymphocyte apoptosis Antibody switching 20 / 30Which is a feature of a secondary immune response? Low antibody titers Faster and stronger antibody production IgM predominance Slow onset 21 / 30Which of the following best describes antigenic drift? Immune memory loss Minor mutations over time Sudden, major changes in antigen Inactivation of antigen 22 / 30Which antibody is most abundant in human serum? IgM IgG IgA IgE 23 / 30Which immunoglobulin appears first during a primary immune response? IgM IgE IgG IgA 24 / 30Which is a function of Regulatory T cells (Tregs)? Stimulate inflammation Kill infected cells Present antigens Suppress immune response 25 / 30What type of immunity is acquired through vaccination? Passive immunity Natural immunity Artificial active immunity Innate immunity 26 / 30Which of the following is a component of the innate immune system? Natural killer (NK) cells T cells Memory B cells Antibodies 27 / 30Which of these cells produces antibodies? Macrophages Dendritic cells Plasma cells T cells 28 / 30Clonal selection refers to: Expansion of specific lymphocytes after antigen recognition Generation of T cell receptors Removal of self-reactive lymphocytes Natural killer cell activation 29 / 30Which of the following diseases is an example of autoimmunity? HIV/AIDS Asthma Rheumatoid arthritis Tuberculosis 30 / 30Which molecule is crucial for T-cell activation along with the TCR–MHC interaction? CD40 CD28 IgE CD19 Your score isThe average score is 52% 0% Restart quiz
