Podcast
Questions and Answers
Which of the following statements about natural killer (NK) cells is correct?
Which of the following statements about natural killer (NK) cells is correct?
- They cannot lyse target cells that have undergone malignant transformation.
- They do not play a role in antibody-dependent cellular cytotoxicity (ADCC).
- They have an 'activating receptor' that recognizes carbohydrate ligands. (correct)
- They express antigen-specific receptors.
Which of the following statements about the complement system is correct?
Which of the following statements about the complement system is correct?
- The term 'complement' refers to its ability to complement the effects of other immune system components. (correct)
- Complement proteins are synthesized solely by the liver.
- Complement proteins do not interact via proteolytic cascades.
- The complement system functions only in the innate host defense system.
Which of the following statements about NK cell receptors is correct?
Which of the following statements about NK cell receptors is correct?
- The 'activating receptor' on NK cells recognizes MHC class I molecules.
- NK cells have only one type of surface receptor.
- The 'inhibitory receptor' on NK cells recognizes MHC class II molecules.
- NK cells have an 'inhibitory receptor' that recognizes MHC class I molecules. (correct)
Which of the following best describes the role of antibodies in the immune system?
Which of the following best describes the role of antibodies in the immune system?
Which of the following statements about the complement system is incorrect?
Which of the following statements about the complement system is incorrect?
Which of the following statements about antibodies is incorrect?
Which of the following statements about antibodies is incorrect?
Which of the following statements about type I interferons (IFNs) is correct?
Which of the following statements about type I interferons (IFNs) is correct?
Which of the following is NOT a main function of phagocytic cells during infections?
Which of the following is NOT a main function of phagocytic cells during infections?
Which of the following statements about phagocytosis is correct?
Which of the following statements about phagocytosis is correct?
Which of the following cells are considered mononuclear phagocytic cells?
Which of the following cells are considered mononuclear phagocytic cells?
What is the primary function of the spleen in the context of immune defense?
What is the primary function of the spleen in the context of immune defense?
Patients with a non-functional or removed spleen are at increased risk of which type of infection?
Patients with a non-functional or removed spleen are at increased risk of which type of infection?
What is the primary mechanism by which the organism can overcome antibody-mediated resistance?
What is the primary mechanism by which the organism can overcome antibody-mediated resistance?
Which of the following is a key function of phagocytes in the body's defense against pathogens?
Which of the following is a key function of phagocytes in the body's defense against pathogens?
Which of the following is a mechanism by which the mucociliary apparatus aids in the removal of bacteria in the respiratory tract?
Which of the following is a mechanism by which the mucociliary apparatus aids in the removal of bacteria in the respiratory tract?
What is the primary function of the acidity of the stomach in inactivating ingested bacteria?
What is the primary function of the acidity of the stomach in inactivating ingested bacteria?
Which of the following is a way in which the normal microbial flora of the body's mucous membranes can help defend against pathogenic microorganisms?
Which of the following is a way in which the normal microbial flora of the body's mucous membranes can help defend against pathogenic microorganisms?
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