IMSE QUIZ 1 Flashcards
From the following, identify a specific component of the adaptive immune system that is formed in response to antigenic stimulation:
A. Lysozyme
B. Complement
C. Commensal organisms
D. Immunoglobulin
Immunoglobulin
Which T cell expresses the CD8 marker and acts specifically to kill tumors or virally infected cells?
A. Helper T
B. T suppressor
C. T cytotoxic
D. T inducer/suppressor
T cytotoxic
What is the name of the process by which phagocytic cells are attracted to a substance such as a bacterial peptide?
A. Diapedesis
B. Degranulation
C. Chemotaxis
D. Phagotaxis
Chemotaxis
Which of the following cell surface molecules is classified as an MHC class II antigen?
A. HLA-A
B. HLA-B
C. HLA-C
D. HLA-DR
HLA-DR
Which MHC class of molecule is necessary for antigen recognition by CD4-positive T cells?
A. Class I
B. Class II
C. Class III
D. No MHC molecule is necessary for antigen
Class II
Which of the following are products of HLA class III genes?
A. T-cell immune receptors
B. HLA-D antigens on immune cells
C. Complement proteins C2, C4, and Factor B
D. Immunoglobulin VL regions
Complement proteins C2, C4, and Factor B
What molecule on the surface of most T cells recognizes antigen?
A. IgT, a four-chain molecule that includes the tau heavy chain
B. MHC protein, a two-chain molecule encoded by the HLA region
C. CD3, consisting of six different chains
D. TcR, consisting of two chains, alpha and beta
TcR, consisting of two chains, alpha and beta
Toll-like receptors are found on which cells?
A. T cells
B. Dendritic cells
C. B cells
D. Large granular lymphocytes
Dendritic cells
Macrophages produce which of the following proteins during antigen processing?
A. IL-1 and IL-6
B. γ-Interferon
C. IL-4, IL-5, and IL-10
D. Complement components C1 and C3
IL-1 and IL-6
A superantigen, such as toxic shock syndrome toxin-1 (TSST-1), bypasses the normal antigen processing stage by binding to and cross linking:
A. A portion of an immunoglobulin molecule and complement component C1
B. Toll-like receptors and an MHC class 1 molecule
C. A portion of an immunoglobulin and a portion of a T-cell receptor
D. A portion of a T-cell receptor and an MHC class II molecule
A portion of a T-cell receptor and an MHC class II molecule
Enhancement of phagocytosis by coating of foreign particles with serum proteins is called?
A. Opsonization
B. Solubilization
C. Agglutination
D. Chemotaxis
Opsonization
Jenner’s work with cowpox, which provided immunity against smallpox, demonstrates which phenomenon?
A. Natural immunity
B. Attenuation of vaccines
C. Phagocytosis
D. Cross-immunity
Cross-immunity
Which of the ff. can be attributed to Pasteur?
A. Discovery of opsonins
B. Research of haptens
C. First attenuated vaccines
D. Discovery of the ABO blood groups
First attenuated vaccines
Which of the following peripheral blood cells plays a key role in killing of parasites?
A. Neutrophils
B. Lymphocytes
C. monocytes
D. eosinophils
eosinophils
Which of the ff. plays an important role as an external defense mechanism?
A. Phagocytosis
B. Lysozyme
C. CRP
D. Complement
Lysozyme