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Immunology and Serology Exam 2 questions with correct answers 2024/2025
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Immunology and Serology Exam 2 questions with correct answers 2024/2025
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Immunology and Serology Exam 2When an antibody-coated antigen is phagocytize, which component of the antibody molecule
must fit into a receptor on the phagocytic cell? - ANSFc region
Inflammation - ANSCharacterized by local redness, swelling, and pain
Sepsis - ANSAn infection-induced systemic condition
Macrophages: - ANSAll of the above
Process antigens
physically present biologically modified antigens to lymphocytes
secrete a lymphocyte-activating factor (IL-1) as a result of proper MHC recognition.
Stages of phagocytosis in correct sequence of occurrence. - ANSChemotaxis
Adherence
Engulfment
Phagosome formation and fusion
Digestion and destruction
A majo;r factor in the killing of bacteria within a vacuole is: - ANSHydrogen peroxide
The primary function of mature neutrophils is: - ANSPhagocytosis
The name of the process that promotes attraction of phagocytic cells toward a foreign particle is:
- ANSChemotaxis
Gaucher's disease - ANSDeficiency of a-glucocerebrosidase
Niemann-Pick disease - ANSDeficiency of sphingomyelinase
A basophil degranulates in a(n): - ANSacute hypersensitivity reaction
The sequence of blood cell development in the embryo and fetus is: - ANSyolk sac, liver-spleen,
bone marrow.
In the first line of nonspecific body defense, intact skin, is cut with a piece of glass contaminated
with Staphylococcus aureus, which cellular component of the immune system quickly responds?
- ANSNeutrophils
Enhancement of phagocytosis by the coating of foreign particles with serum proteins is called: -
ANSopsonization
, Hematopoiesis occurs in the yolk sac during the: - ANSEmbryonic period of gestation
Bone Marrow: - ANSPrimary
Lymph nodes - ANSSecondary
If an immune dysfunction is suspected in a child, the appropriate workup would be a(n): - ANSall
of the above
Complete blood count
lymphocyte profile by flow cytometry
immunoglobulin elecrophoresis
Diminished immunoglobulin levels can be related to: - ANSa deficit of activated T lymphocytes
https://classroom.southwesterncc.edu/courses/1/MLT-126-HYS1-2017SP/ppg/examview/Turgeo
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Match the lymphoid organs with the approximate percentage of T lymphocytes. - ANSLymph
nodes: 60%
Blood: 80%
Bone marrow: 10%
The T cell receptor (TCR) recognizes an antigen: - ANSas a peptide bonded to an MHC class II
molecule on the surface of an antigen-presenting cell.
Natural Treg cells - ANSRelatively high avidity for self-antigens
Cytotoxic T lymphocytes, or T cytotoxic (Tc) cells - ANSEffector cells that can directly destroy
virally infected target cells
Suppressor T lymphocytes or T suppressor (Ts) cells - ANSDown regulate the actions of other T
and B cells
A cell-mediated immunodeficiency is suggested if the child has: - ANSboth a and b
recurrent bacterial infections
recurrent fungal infections
Mature T lymphocytes survive for _______ compared with B lymphocytes, which survive for a
few days. - ANSeither b or c
several months
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