Agricultural Microbiology Quiz

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Questions and Answers

Which of the following is an example of adaptive immunity?

  • Platelets
  • Skin
  • Neutrophils
  • B cells (correct)

What is the function of dendritic cells in the immune system?

  • Phagocytosis
  • Destroy target cells
  • Stimulate development of adaptive immunity (correct)
  • Produce antibodies

Which cells are responsible for cell-mediated immunity?

  • Monocytes
  • Neutrophils
  • Eosinophils
  • T cells (correct)

What is the main function of natural killer cells?

<p>Destroy target cells (A)</p> Signup and view all the answers

Which of the following is a characteristic of innate immunity?

<p>Involves nonspecific responses to pathogens (C)</p> Signup and view all the answers

What is the role of eosinophils in the immune system?

<p>Kill parasites (C)</p> Signup and view all the answers

Which cells are involved in phagocytosis?

<p>Neutrophils (B)</p> Signup and view all the answers

What is the main function of monocytes in the immune system?

<p>Phagocytosis (D)</p> Signup and view all the answers

Which component of blood is responsible for transporting oxygen and carbon dioxide?

<p>Red Blood Cells (C)</p> Signup and view all the answers

What is the main role of toll-like receptors (TLRs) in the immune system?

<p>Recognize groups of pathogens (B)</p> Signup and view all the answers

Which part of the immune system is active immediately upon infection?

<p>Innate immunity (C)</p> Signup and view all the answers

What is the function of mucus membranes in the immune system?

<p>Trap and move bacteria away from the body (A)</p> Signup and view all the answers

Which cells can carry out extracellular killing?

<p>Neutrophils (D)</p> Signup and view all the answers

What is the function of antibodies in the immune response?

<p>Mark pathogens for destruction and/or phagocytosis (C)</p> Signup and view all the answers

What do B cells secrete in response to antigen binding?

<p>Soluble form of the protein called an antibody or immunoglobulin (Ig) (D)</p> Signup and view all the answers

Which cells can distinguish normal from infected cells via membrane proteins?

<p>Natural killer lymphocytes (NK cells) (C)</p> Signup and view all the answers

What is the main function of phagocytic cells?

<p>Engulf and digest pathogens (C)</p> Signup and view all the answers

What is the role of antigens in the immune response?

<p>Elicit a response from a B or T cell (A)</p> Signup and view all the answers

What is the primary function of neutrophil extracellular traps (NETs)?

<p>Kill via immobilization of pathogens (B)</p> Signup and view all the answers

What distinguishes active immunity from passive immunity?

<p>Active immunity develops naturally when memory cells form clones in response to an infection, while passive immunity is when antibodies are directly donated (D)</p> Signup and view all the answers

What is the function of opsonization in the immune response?

<p>Mark pathogens for destruction and/or phagocytosis (A)</p> Signup and view all the answers

What is the purpose of vaccination?

<p>To elicit an immune response and develop immunological memory (D)</p> Signup and view all the answers

What is the function of natural killer lymphocytes (NK cells) in the immune response?

<p>To distinguish normal from infected cells via membrane proteins (C)</p> Signup and view all the answers

What is the role of mast cells in the immune response?

<p>Release signaling molecules to initiate an inflammatory response (B)</p> Signup and view all the answers

Which of the following is true about adaptive immunity?

<p>It develops after exposure to specific pathogens (A)</p> Signup and view all the answers

What is the main function of dendritic cells in the immune system?

<p>Stimulate development of adaptive immunity (C)</p> Signup and view all the answers

What is the primary function of neutrophils in the immune system?

<p>Phagocytosis (D)</p> Signup and view all the answers

What is the main role of toll-like receptors (TLRs) in the immune system?

<p>Recognize groups of pathogens (B)</p> Signup and view all the answers

What is the function of opsonization in the immune response?

<p>Enhance phagocytosis of pathogens (D)</p> Signup and view all the answers

What is the main function of natural killer cells in the immune response?

<p>Destroy target cells (A)</p> Signup and view all the answers

What is the function of mucus membranes in the immune system?

<p>Trap and move bacteria away from the body (C)</p> Signup and view all the answers

What distinguishes active immunity from passive immunity?

<p>It is long-lasting and involves memory cells (D)</p> Signup and view all the answers

What do eosinophils primarily target in the immune system?

<p>Parasites (D)</p> Signup and view all the answers

What is the main function of monocytes in the immune system?

<p>Phagocytosis (C)</p> Signup and view all the answers

What distinguishes innate immunity from adaptive immunity?

<p>It is effective from the time of birth (D)</p> Signup and view all the answers

Which component of blood is responsible for transporting oxygen and carbon dioxide?

<p>Red blood cells (B)</p> Signup and view all the answers

What is the function of neutrophil extracellular traps (NETs) in the immune response?

<p>Immobilization and killing of pathogens (C)</p> Signup and view all the answers

Which of the following is an example of passive immunization?

<p>Transfusion of antibodies (C)</p> Signup and view all the answers

What is the primary function of natural killer lymphocytes (NK cells) in the immune response?

<p>Inducing apoptosis in infected cells (C)</p> Signup and view all the answers

What distinguishes active immunity from passive immunity?

<p>Active immunity involves the formation of memory cells, while passive immunity does not (A)</p> Signup and view all the answers

What is the main role of toll-like receptors (TLRs) in the immune system?

<p>Recognition of pathogen-associated molecular patterns (PAMPs) (D)</p> Signup and view all the answers

Which cells can distinguish normal from infected cells via membrane proteins?

<p>Natural killer cells (A)</p> Signup and view all the answers

What is the function of opsonization in the immune response?

<p>Facilitating phagocytosis of pathogens (C)</p> Signup and view all the answers

What is the main function of monocytes in the immune system?

<p>Differentiating into macrophages (A)</p> Signup and view all the answers

What is the main function of mast cells in the immune response?

<p>Release of histamine and other inflammatory mediators (C)</p> Signup and view all the answers

What is the function of mucus membranes in the immune system?

<p>Physical barrier against pathogens (C)</p> Signup and view all the answers

Which cells are involved in phagocytosis?

<p>Macrophages and neutrophils (A)</p> Signup and view all the answers

What is the main function of dendritic cells in the immune system?

<p>Antigen presentation to T cells (B)</p> Signup and view all the answers

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