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PCB 3233 Immunology Exam 4 Practice Questions
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DownloadWhat are the primary lymphoid organs and their functions?
Omdraaien
The primary lymphoid organs are the bone marrow and the thymus. The bone marrow is responsible for the production of blood cells, including B and T lymphocytes, while the thymus is where T lymphocytes mature.
Describe the role of antigen-presenting cells (APCs) in the immune response.
Omdraaien
APCs, such as dendritic cells, macrophages, and B cells, capture antigens and present them on their surface using MHC molecules. This presentation is crucial for the activation of T cells, which then initiate an adaptive immune response.
What is the difference between innate and adaptive immunity?
Omdraaien
Innate immunity is the bodys first line of defense and is non-specific, involving barriers like skin and phagocytic cells. Adaptive immunity is specific and involves lymphocytes that recognize and remember specific pathogens for a more efficient response upon re-exposure.
Explain the process of clonal selection in B cells.
Omdraaien
Clonal selection is the process by which a B cell with a receptor specific to an antigen is selected for proliferation. Upon binding to its specific antigen, the B cell is activated, proliferates, and differentiates into plasma cells and memory B cells.
What are the functions of helper T cells (CD4+) in the immune system?
Omdraaien
Helper T cells coordinate the immune response by secreting cytokines that activate other immune cells, including B cells, cytotoxic T cells, and macrophages, enhancing their ability to clear infections.
How do cytotoxic T cells (CD8+) kill infected cells?
Omdraaien
Cytotoxic T cells recognize infected cells through MHC class I molecules presenting viral peptides. They induce apoptosis in these cells by releasing perforin and granzymes, which create pores and trigger cell death.
Define the term immunological memory and its significance.
Omdraaien
Immunological memory refers to the immune systems ability to remember a previously encountered antigen, resulting in a more rapid and robust response upon subsequent exposures. This is the principle behind vaccination.
What is the role of regulatory T cells in the immune system?
Omdraaien
Regulatory T cells maintain immune homeostasis by suppressing immune responses, preventing autoimmunity, and ensuring that immune responses do not damage host tissues.
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What are the primary lymphoid organs and their functions?
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The primary lymphoid organs are the bone marrow and the thymus. The bone marrow is responsible for the production of blood cells, including B and T lymphocytes, while the thymus is where T lymphocytes mature.
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Vraag:
Describe the role of antigen-presenting cells (APCs) in the immune response.
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Controleer antwoordAntwoord:
APCs, such as dendritic cells, macrophages, and B cells, capture antigens and present them on their surface using MHC molecules. This presentation is crucial for the activation of T cells, which then initiate an adaptive immune response.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
What is the difference between innate and adaptive immunity?
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Controleer antwoordAntwoord:
Innate immunity is the bodys first line of defense and is non-specific, involving barriers like skin and phagocytic cells. Adaptive immunity is specific and involves lymphocytes that recognize and remember specific pathogens for a more efficient response upon re-exposure.
Jouw antwoord:
input text value
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Vraag:
Explain the process of clonal selection in B cells.
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Controleer antwoordAntwoord:
Clonal selection is the process by which a B cell with a receptor specific to an antigen is selected for proliferation. Upon binding to its specific antigen, the B cell is activated, proliferates, and differentiates into plasma cells and memory B cells.
Jouw antwoord:
input text value
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Vraag:
What are the functions of helper T cells (CD4+) in the immune system?
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Controleer antwoordAntwoord:
Helper T cells coordinate the immune response by secreting cytokines that activate other immune cells, including B cells, cytotoxic T cells, and macrophages, enhancing their ability to clear infections.
Jouw antwoord:
input text value
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Vraag:
How do cytotoxic T cells (CD8+) kill infected cells?
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Controleer antwoordAntwoord:
Cytotoxic T cells recognize infected cells through MHC class I molecules presenting viral peptides. They induce apoptosis in these cells by releasing perforin and granzymes, which create pores and trigger cell death.
Jouw antwoord:
input text value
Vraag opnieuw antwoorden
Vraag:
Define the term immunological memory and its significance.
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Controleer antwoordAntwoord:
Immunological memory refers to the immune systems ability to remember a previously encountered antigen, resulting in a more rapid and robust response upon subsequent exposures. This is the principle behind vaccination.
Jouw antwoord:
input text value
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Vraag:
What is the role of regulatory T cells in the immune system?
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Controleer antwoordAntwoord:
Regulatory T cells maintain immune homeostasis by suppressing immune responses, preventing autoimmunity, and ensuring that immune responses do not damage host tissues.
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Oefenvragen makenInformatie
This set of practice questions is designed to help students prepare for the PCB 3233 Immunology Exam 4. The questions cover a range of topics related to immunology, including immune system components, immune responses, and disease mechanisms. Each question is followed by a detailed answer to aid in understanding and retention of the material.
Aantal
64 oefenvragen
Taal
English
Gemaakt op
16-11-2025
Opleiding
Bekijk alle 64 oefenvragen
-
What are the primary lymphoid organs and their functions?
The primary lymphoid organs are the bone marrow and the thymus. The bone marrow is responsible for the production of blood cells, including B and T lymphocytes, while the thymus is where T lymphocytes mature. -
Describe the role of antigen-presenting cells (APCs) in the immune response.
APCs, such as dendritic cells, macrophages, and B cells, capture antigens and present them on their surface using MHC molecules. This presentation is crucial for the activation of T cells, which then initiate an adaptive immune response. -
What is the difference between innate and adaptive immunity?
Innate immunity is the bodys first line of defense and is non-specific, involving barriers like skin and phagocytic cells. Adaptive immunity is specific and involves lymphocytes that recognize and remember specific pathogens for a more efficient response upon re-exposure. -
Explain the process of clonal selection in B cells.
Clonal selection is the process by which a B cell with a receptor specific to an antigen is selected for proliferation. Upon binding to its specific antigen, the B cell is activated, proliferates, and differentiates into plasma cells and memory B cells. -
What are the functions of helper T cells (CD4+) in the immune system?
Helper T cells coordinate the immune response by secreting cytokines that activate other immune cells, including B cells, cytotoxic T cells, and macrophages, enhancing their ability to clear infections. -
How do cytotoxic T cells (CD8+) kill infected cells?
Cytotoxic T cells recognize infected cells through MHC class I molecules presenting viral peptides. They induce apoptosis in these cells by releasing perforin and granzymes, which create pores and trigger cell death. -
Define the term immunological memory and its significance.
Immunological memory refers to the immune systems ability to remember a previously encountered antigen, resulting in a more rapid and robust response upon subsequent exposures. This is the principle behind vaccination. -
What is the role of regulatory T cells in the immune system?
Regulatory T cells maintain immune homeostasis by suppressing immune responses, preventing autoimmunity, and ensuring that immune responses do not damage host tissues. -
How do vaccines work to protect against infectious diseases?
-
What is the complement system, and what are its functions?
-
Describe the process of somatic hypermutation in B cells.
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What is an autoimmune disease, and give an example.
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Explain the significance of MHC molecules in the immune system.
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How do natural killer (NK) cells contribute to the immune response?
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What is the role of cytokines in the immune system?
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Describe the process of antigen processing and presentation.
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What is the difference between active and passive immunity?
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How do B cells become activated?
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What is hypersensitivity, and what are its types?
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Explain the role of mast cells in allergic reactions.
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What is the role of IgE in allergic responses?
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Describe the process of isotype switching in B cells.
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What is the role of dendritic cells in the immune system?
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How does the immune system differentiate between self and non-self?
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What is the significance of the thymus in T cell development?
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Explain the role of the spleen in the immune system.
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What are pattern recognition receptors (PRRs) and their function?
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How do antibodies neutralize pathogens?
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Describe the role of the lymphatic system in immunity.
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What is the role of T cell receptors (TCRs) in the immune response?
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How do immune checkpoints regulate T cell activity?
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What is the significance of the germinal center reaction in adaptive immunity?
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Explain the concept of antigenic variation and its impact on immunity.
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What are the mechanisms of immune evasion by viruses?
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How do macrophages contribute to the immune response?
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What is the role of the microbiome in immune system function?
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Describe the process of leukocyte extravasation.
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What is the role of chemokines in the immune system?
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How do toll-like receptors (TLRs) function in innate immunity?
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What is the significance of the blood-brain barrier in immunity?
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How do vaccines contribute to herd immunity?
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Describe the role of eosinophils in the immune response.
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What is the function of basophils in the immune system?
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Explain the concept of immune tolerance.
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How do monoclonal antibodies work as therapeutic agents?
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What is the role of the gut-associated lymphoid tissue (GALT) in immunity?
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Describe the process of affinity maturation in B cells.
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What is the role of the Fc region of an antibody?
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How do T cells recognize antigens?
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Explain the process of central tolerance in the immune system.
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What is the role of the reticuloendothelial system in immunity?
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How do immune complexes contribute to disease?
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Describe the role of the bone marrow in hematopoiesis.
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What is the significance of the lymph nodes in the immune system?
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How do B cell receptors (BCRs) recognize antigens?
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What is the role of the mucosal immune system?
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Explain the concept of cross-presentation in the immune system.
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How do adjuvants enhance vaccine efficacy?
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What is the role of the thymic selection process in T cell development?
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Describe the process of antibody-dependent cellular cytotoxicity (ADCC).
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How does the immune system respond to a bacterial infection?
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What is the significance of the major histocompatibility complex (MHC) in organ transplantation?
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How do immune cells communicate with each other?
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What is the role of the adaptive immune response in cancer immunotherapy?
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