25 Questions
Which of the following is NOT a key component of the innate immune system?
Plasma cells
Which of the following phagocytic cells is primarily responsible for clearing pathogens from the bloodstream?
Neutrophils
What is the primary function of the complement system in the innate immune response?
To destroy foreign cells through lysis
Which of the following is NOT a characteristic of the adaptive immune system?
Rapid response to pathogens
What is the primary role of natural killer (NK) cells in the innate immune response?
Destruction of infected or cancerous cells
Which of the following is a key difference between the innate and adaptive immune systems?
Rapid response to pathogens
What is the primary function of the alternative complement pathway in the innate immune response?
To enhance phagocytosis by opsonization
Which of the following is a key function of cytokines in the innate immune response?
To promote the recruitment and activation of inflammatory cells
What is the primary role of dendritic cells in the adaptive immune response?
Presentation of antigens to T cells
Which of the following is a key function of the lectin complement pathway in the innate immune response?
To bind to carbohydrates on pathogens and activate the complement system
Which type of response involves T lymphocytes?
Cell-mediated immunity
Which cells are most active as phagocytes in the immune system?
Neutrophils
Which defense barrier functions by secreting antimicrobial peptides to kill pathogens?
Defensins
Which type of immunity is also known as acquired immunity?
Adaptive immunity
Which cells react to specific antigens to become activated in the immune response?
Dendritic cells
What is the main function of the Complement system in the immune response?
Activate proteins in innate immunity
Which type of cells lack cytoplasmic granules and include lymphocytes and monocytes?
Agranulocytes
In the immune system, which line of defense involves the presence of surface barriers to block pathogen entry?
'1st line' defense barriers
Which protective function is attributed to sebum in the immune system?
Killing pathogens on the skin's surface
Which of the following is NOT one of the three basic phases of humoral immunity?
Antigen presentation by dendritic cells
Which of the following statements about antibody structure is correct?
Antibodies consist of four polypeptide chains: two heavy and two light chains.
Which of the following is NOT a function of antibodies?
Antigen presentation to T cells
Which of the following statements about autoimmunity is correct?
Autoimmunity occurs when B cells bind to self-antigens and produce autoantibodies.
Which class of antibody is responsible for the transfer of passive immunity from mother to fetus?
IgG
Which of the following statements about the different antibody classes is correct?
IgM is a pentamer and is involved in the initial response to pathogens.
Test your knowledge on antibodies, including their structure, function, and the process of antibody-mediated immunity. Learn about the three basic phases of B cell activation, antibody production, and memory B cell response.
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