PRIME Videos Flashcards
Which of the following innate immune cells are phagocytic? macrophages basophils dendritic cells neutrophils
macrophages
neutrophils
dendritic cells
which innate immune cell is implicated in immediate-type hypersensitivity (allergies) ?
basophils
which of the following best pairs an innate immune receptor type with its function?
A. toll-like receptor (TLR); recognition of foreign extracellular proteins to initiate an inflammatory cascade
b. TLR; recognition of specific antigens through self /nonself discrimination
c. TLR; recognition of pathogen associated molecular patterns to elicit an immune response
C
which of the following innate immune cells would best obliterate a viral infection?
Natural killer cells
what is the key antigen presenting cell?
dendritic cell, macrophages, and B-cells are all antigen presenters however dendritic cells are usually considered the most important cells incvolved in antigen presentation to T-cells
t/f the adaptive immune system provides a delayed and pathogen specific response to infection
true
major histocompatibility complex (MHC) genes code for proteins that play an essential role in which of the following?
antigen presentation to B cells/T-cells/or both
T-cell
which of the following is correctly characterized as the most prevalent antibody in serum as well as an opsonin that can cross the placenta
IgG
t/f CD4+ T cells recognize MHC I, while CD8+ T cells recognize MHC II
false
CD4+ T cells recognize MHC II
CD8+ T cells recognize MHC 1
what is the effector cell for humoral immunity ?
plasma cell
what are the three key functions of complement?
opsonization, inflammation and lysis
which of the following enzymes is formed by all three pathways of complement activation? C1 convertase C2 ' C3 ' C4 '
C3 convertase
t/f the lectin pathway requires antibodies for activation
false
the lectin pathway is activated via binding of bacterial mannose to complement mannose binding protein
which of the following is a function of C3b?
opsonization
which of the three complement pathways is directly associated with the adaptive immune system?
alternative
lectin
classical
classical
