Notes in 9 Immunity

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Published 10/07/2024 What is the primary function of eosinophils in the immune system?  a) Engulfing bacteria  b) Mediating allergic responses and figh…
Published 10/07/2024 Which of the following cells is conasidered a part of both the innate and adaptive immune responses?  a) Neutrophils  b) Macrophag…
Published 10/07/2024 Which part of the antibody binds to an antigen?  a) Constant region  b) Fab region  c) Fc region  d) Light cha…
Published 10/07/2024 Which cytokine is primarily responsible for stimulating the production of IgE?  a) IL-2  b) IL-4  c) IL-12  d)…
Published 10/07/2024 Which cells produce antibodies in response to an antigen?  a) T-helper cells  b) Plasma cells  c) Neutrophils &nbsp…
Published 10/07/2024 Which immune cell type is involved in directly killing virus-infected cells without prior sensitization?  a) NK cells  b) B cells&…
Published 10/07/2024 Which of the following best describes the process of opsonization?  a) Direct killing of bacteria by macrophages  b) Marking of pa…
Published 10/07/2024 Which of the following describes the role of the thymus in immunity?  a) Production of antibodies  b) Site of T-cell maturation&nb…
Published 10/07/2024 Which immunoglobulin is most abundant in secretions such as saliva and mucosal surfaces?  a) IgG  b) IgA  c) IgM &n…
Published 10/07/2024 Which type of immune response is primarily activated during a bacterial infection?  a) Humoral immunity  b) Cell-mediated immunity…
Published 10/07/2024 Which cells recognize and respond to antigens presented by MHC class II molecules?  a) Cytotoxic T cells  b) Helper T cells &…
Published 10/07/2024 What type of hypersensitivity reaction involves immune complexes depositing in tissues, leading to inflammation?  a) Type I  b) Ty…
Published 10/07/2024 What happens during clonal expansion in the immune response?  a) B cells are destroyed by NK cells  b) T cells differentiate into …
Published 10/07/2024 Which of the following is a characteristic feature of a secondary immune response?  a) Slower and less intense than the primary response&nbs…
Published 10/07/2024 Which type of cells are responsible for producing immunological memory?  a) Macrophages  b) Memory B and T cells  c) Neu…
Published 10/07/2024 What is the primary function of the immune system?  a) Production of hormones  b) Defense against infections and cancer &nbsp…
Published 10/07/2024 Which cells are primarily involved in phagocytosis during the innate immune response?  a) B cells and T cells  b) Neutrophils and …
Published 10/07/2024 What type of immunity is provided by vaccines?  a) Innate immunity  b) Adaptive immunity  c) Passive immunity &nbsp…
Published 10/07/2024 Which of the following is a characteristic of innate immunity?  a) Highly specific response  b) Memory formation  c) Imm…
Published 10/07/2024 How do B cells respond to the presence of an antigen?  a) By releasing histamine  b) By differentiating into plasma cells and prod…
Published 10/07/2024 Which immunoglobulin is capable of crossing the placenta to protect the fetus?  a) IgM  b) IgA  c) IgG  d) IgE
Published 10/07/2024 What is the main role of cytotoxic T lymphocytes?  a) Phagocytosis of bacteria  b) Killing of infected or cancerous cells &nb…
Published 10/07/2024 Which immune response is most effective against intracellular pathogens such as viruses?  a) Humoral immunity  b) Cell-mediated im…
Published 10/07/2024 Which of the following molecules is part of the complement system?  a) Interferon  b) C3  c) IgA  d) TNF-alpha
Published 10/07/2024 What is the role of memory cells in the adaptive immune response?  a) Initiating immediate immune reactions upon subsequent exposure to the …
Published 10/07/2024 Which cytokine is primarily responsible for activating macrophages?  a) IL-4  b) IL-2  c) IFN-gamma  d) IL-10
Published 10/07/2024 Which immunoglobulin is most associated with allergic reactions and parasitic infections?  a) IgG  b) IgA  c) IgM &…
Published 10/07/2024 How does passive immunity differ from active immunity?  a) Passive immunity requires the host to produce antibodies  b) Passive im…
Published 10/07/2024 What are dendritic cells primarily responsible for?  a) Directly killing pathogens  b) Acting as antigen-presenting cells &nb…
Published 10/07/2024 Which cell type is involved in the activation of both B cells and cytotoxic T cells?  a) Regulatory T cells  b) Helper T cells (CD…
Published 10/07/2024 Which component of the immune system is primarily involved in preventing viral infections by recognizing and killing virus-infected cells?  …
Published 10/07/2024 What is the function of the major histocompatibility complex (MHC) in immunity?  a) To transport immune cells to the site of infection …
Published 10/07/2024 Which type of hypersensitivity reaction is mediated by IgE antibodies?  a) Type I (Immediate)  b) Type II (Cytotoxic)  c…
Published 10/07/2024 Which immune cells are known as the first responders to infection?  a) B cells  b) Neutrophils  c) NK cells  d…
Published 10/07/2024 How do NK cells recognize and destroy target cells?  a) Through antigen-specific receptors  b) By recognizing the absence of MHC c…
Published 10/07/2024 In an experimental model, an animal is injected with a bacterial pathogen, and its neutrophils are observed to migrate to the site of infection. What …
Published 10/07/2024 A patient receives an organ transplant but later suffers from organ rejection. What is the most likely immunological mechanism involved?  a)…
Published 10/07/2024 In an individual with a genetic mutation preventing the formation of memory B cells, what is the most likely outcome of subsequent infections by the s…
Published 10/07/2024 If a patient lacks the ability to produce interferons, which of the following processes is most likely impaired?  a) Activation of macrophag…
Published 10/07/2024 A researcher removes the thymus from a developing animal. What effect will this have on the animal’s immune system later in life?  a) Reduce…
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