Introduction & Taxonomy of Immunology Practice Test

These questions are part of the practice quiz. Start practicing

• How does TNF-α kill tumors in animal studies?
• Which enzyme breaks down collagen and is found in neutrophil granules?
• Which cell type is a granulocyte?
• In phagocytosis, after the phagosome forms, what is the next step?
• PAMPs are recognized by which general class of receptors?
• Which of the following pairs correctly classifies the cell types as granulocytes or agranulocytes?
• How are macrophages produced and reach tissues?
• Vascular leak and septic shock can be caused by which cytokine?
• Which cytokine produced by activated T cells activates macrophages?
• Which macrophage surface molecule binds CD28 on T cells (providing co-stimulation)?
• Where are basophils and mast cells located?
• Which enzymes are found in lysosomes?
• Which surface molecules are found on natural killer cells?
• In the context of a left shift, the appearance of immature neutrophils is most commonly described as which shape?
• What is a typical consequence of Toll-like receptor engagement on phagocytes?
• Which immune cell type, when activated, can stimulate macrophages to become more activated?
• Which component is part of the innate immune system?
• Neutrophils contain which two main types of granules?
• Left shift indicates what about bone marrow production during infection?
• Which of the following activates eosinophils?
• What is the role of the Fc receptor on macrophages?
• What activates eosinophils, mast cells, and basophils as part of their effector response?
• Which molecule is described as an endogenous pyrogen in the notes?
• Which of the following is a role of IL-6?
• How are endotoxins (lipopolysaccharides) recognized by the innate immune system?
• Which statement best describes a function of natural killer cells?
• Tumor necrosis factor (TNF) is involved in which processes?
• What happens when overwhelmed by infection?
• ONOO- is produced from NO and O2-; which option correctly identifies ONOO-?
• During septic shock, TNF-α can lead to which condition?
• Which statement about Fc and C3b receptors on macrophages is true?
• The complement system is best described as which of the following?
• Eosinophilia is characteristic of which conditions?
• Which chemotaxin attracts neutrophils?
• What happens if C3b binds to nothing?
• What is the result when NK cells encounter a target with reduced MHC I?
• Which of the following is NOT a component of the innate immune system?
• Which cell type corresponds to macrophages in the liver?
• What is the role of C5a in the immune response?
• Which molecule is commonly found on the surface of most human cells?
• What initiates adaptive immune activation?
• What is true about activated macrophages?
• Langerhans cells are specialized dendritic cells located in skin and mucosal membranes; they migrate to lymph nodes to activate T cells. Which statement is true?
• Which of the following is an opsonin?
• Which of the following is a vital function of macrophages?
• What are the two most important cytokines released by macrophages?
• Which cytokine from Th2 cells stimulates eosinophil production, maturation, survival, and recruitment?
• Complement proteins are produced mainly by which organ, and which component is the most abundant?
• What is the main role of small granules within neutrophils?
• Which interaction mediates rolling/weak adhesion of neutrophils to endothelium?
• Eosinophils, mast cells, and basophils are particularly important in defense against which type of pathogens?
• Which stimuli stimulate integrin expression on neutrophils for tight adhesion?
• What does the term 'left shift' describe in neutrophil populations?
• Eosinophil granules contain major basic protein and appear red when stained with eosin dye. Which statement best describes this feature?
• Which statement about neutrophils is correct?
• Which statement best describes the innate immune system?
• Cytokines are best described as what?
• Which statement best describes how the innate immune system is activated?
• Where are neutrophils produced?
• The innate immune system is best described as:
• What occurs if C3b is stabilized?
• What cellular component is found inside neutrophils and contains bactericidal enzymes?
• Lysozyme is an enzyme that damages bacterial cell walls and is found in neutrophil granules of which type?
• When lysosomal enzymes are secreted into surrounding tissue, what can occur?
• Which intracellular receptors are stimulated by peptidoglycan when bacteria invade macrophages?
• Nucleases break down nucleic acids into which molecules?
• Which statement describes resting macrophages?
• Which receptors recognize ligands to prime macrophages from resting to primed?
• Which cells are primarily responsible for presenting antigens to the adaptive immune system?
• What happens to neutrophils when released into the bloodstream?
• Which cells create a highly specific immune response that takes time to develop?
• IL-6 causes fever.
• C3 spontaneously converts into which product?
• Which cells are professional antigen-presenting cells (APCs) for activating T cells?
• Natural killer cells share their lymphocyte lineage with which immune cells?
• Which statement accurately describes large granules in neutrophils?
• Cachexia is defined as which of the following?
• What is the main medical relevance of eosinophils, mast cells, and basophils?
• MAC formation results in which outcome?
• Which statement contrasts innate and adaptive immunity?
• How do neutrophils transmigrate across the endothelium?
• What happens when the innate immune system cannot handle a pathogen?
• Which cells are phagocytes in the central nervous system?
• During rolling/weak adhesion, which neutrophil ligand interacts with endothelial E- and P-selectins?
• Activated macrophages are better at which function?
• Why can NK cells destroy cells that downregulate MHC I?
• Which cells are activated by IFN-γ produced by NK cells?
• Which cell type is a key component of the innate immune system and can kill virus-infected cells without prior sensitization?
• Cluster of Differentiation (CD) molecules are what?
• Which type of neutrophil granule can be released into the extracellular space?
• Which pattern recognition molecule is never found in normal human cells and is used to distinguish pathogens?
• What are the primary functions of CD4 and CD8 T cells?
• Which enzymes are contained in small granules, and what is their role?
• Which of the following describes IL-1 roles?
• Which chemokines attract neutrophils to sites of inflammation?
• Cytokine production by macrophages primarily serves to
• In ADCC, which cell type primarily mediates killing by binding the Fc portion of IgG on antibody-coated targets, leading to degranulation?
• IL-12 acts to promote which T helper cell lineage?
• What is the major opsonin for neutrophils?
• Which component is typically associated with the innate immune system?
• Which statement about neutrophil function is accurate?
• Which Toll-like receptor is primarily involved in recognizing lipopolysaccharide (LPS) via the CD14 complex?
• IgE antibodies coating parasites are produced by which cells?
• The process whereby NK cells kill target cells coated with antibodies is called?
• Chediak-Higashi Syndrome involves a failure of which cellular process?
• Which description best fits osteoclasts?
• In antibody-dependent cellular cytotoxicity (ADCC), what is the initial event that targets the cell for destruction?
• MHC Class I molecules present endogenous peptide antigens to which lymphocytes?
• Which agent most drives macrophage activation toward a microbicidal state?
• What is released during degranulation by mast cells and basophils?
• IL-6 stimulates the liver to produce which type of proteins?
• Which statement correctly describes ROS and RNIs in macrophages?
• What effect do IL-1 and TNF-α have on endothelial cells during inflammation?
• What is the overall role of the innate immune system in infection control?
• Which statement distinguishes adaptive immunity from innate immunity?
• Which cytokines are released by macrophages in addition to IL-1 and TNF-α?
• Which cytokine family is crucial for antiviral defense?
• What is the significance of CD4 expression on T cells?
• What is the role of antigen processing in adaptive immunity?
• What is the primary role of B cells?
• Which cell type is the major antigen-presenting cell that activates naive T cells in lymph nodes?
• C5a is a component of which part of the immune system?
• Which statement best describes a difference between natural killer cells and T/B cells?
• Which macrophage surface molecule presents antigen to CD4+ T cells?
• What is the primary action of lysozymes?
• Which statement accurately describes PAMP recognition?
• What is the correct sequence by which neutrophils exit the bloodstream to reach inflamed tissue?
• IL-12 plays what role in T cell differentiation?
• Basophils contribute to allergic responses by which action?
• Which statement about small granules in neutrophils is true?
• Which statement about memory in immunity is true?
• What is the role of C3b after C3 is activated?
• What is the function of resting macrophages?
• What does the respiratory burst pathway produce?
• Which cell is an antigen-presenting cell?
• A low alkaline phosphatase score is clinically associated with which condition?
• Why must T cells be activated by processed antigen presented by APCs?
• How are reactive oxygen species produced?
• During tight adhesion, neutrophil integrins bind to which endothelial adhesion molecules?
• Which surface receptor on macrophages recognizes lipopolysaccharide (Gram-negative bacteria)?
• Which cell type is primarily responsible for releasing toxic enzymes onto parasites during antibody-dependent cellular cytotoxicity when antibodies bind via IgE?
• Which pattern is described as never being found in normal human cells and is recognized by the innate immune system?
• Eosinophils bind IgE via which receptor?
• What does TNF-α inhibit in adipose tissue?
• Which macrophage surface molecule binds CD40L on activated T cells?
• Which statement about the adaptive immune system is true?
• What is the fate of bacteria after phagosome-lysosome fusion?
• How are reactive nitrogen intermediates made?
• Which molecule inhibits microbial growth via iron chelation?
• Which statement is true about NK cells compared to T/B cells?
• What enzymes are contained in large granules, and what is their site of action?
• Which items are cytokine subsets mentioned in the material?
• Natural killer cells lack which property that is common to T and B cells?
• How are mast cells and basophils activated?
• What is the complement system?
• Which marker is unique to natural killer (NK) cells?
• Which of the following is found in lysosomes?
• What is the function of CD16 on NK cells?
• What is the first barrier humans have against infection?
• Interferons are cytokines secreted by immune cells that interfere with viral replication
• Lactoferrin inhibits microbial growth via iron chelation and is seen in neutrophils in which granules?
• Which statement explains why the adaptive immune system is slower initially?
• Which of the following is a key PAMP recognized by the innate immune system?
• Interleukins are cytokines that primarily do what?
• Dendritic cells are best described as which of the following?
• Which cell type is considered a guardian of innate immunity?
• Are neutrophils antigen-presenting cells?
• Which cytokine is primarily associated with fever and acute-phase protein production?
• In a normal sequence, what triggers the adaptive immune response to a previously encountered pathogen?
• What is the primary role of IL-8?
• What do eosinophils, mast cells, and basophils contain that enables their destructive capabilities?
• Which group of leukocytes is commonly associated with allergic responses and parasitic defense and is considered part of the innate immune system?
• What mediates crawling/tight adhesion of neutrophils to endothelium?
• Transforming growth factor (TGF) is a secreted signaling protein that mainly does what?
• Which states can a macrophage exist in?
• Mycobacterium tuberculosis evades destruction inside macrophages by which mechanism?
• What is the primary function of chemokines?
• Chediak-Higashi Syndrome is characterized by which immune defect?
• In natural killer cells, antibody-dependent cellular cytotoxicity is mediated by binding of which receptor to the Fc portion of IgG?
• What is the role of the C3b receptor on macrophages?