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MCMP 422 Latest 2024 Final Exam Questions And Accurate Answers
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MCMP 422 Latest 2024 Final Exam Questions And Accurate Answers_____ will carry pathogen antigens from an infected site and deliver the antigens to a
lymph node.
a. plasma cells
b. large granular lymphocytes
c. mast cells
d. basophils
e. dendritic cells - Answer e
which of the following statements is true?
a. the hematopoietic stem cell gives rise to WBC, but a different stem cell is the
progenitor of red blood cells
b. hematopoietic stem cells are only found in lymph nodes
c. platelets do not circulate and reside only in bone marrow
d. hematopoietic stem cells are self-renewing
e. during human development, hematopoiesis occurs at different anatomical sites -
Answer e or d
which of the following is correctly paired?
a. lymphocyte: innate immune response
b. NK cell: phagocytosis of viruses
,c. macrophage: phagocytosis and killing of microorganisms
d. erythrocyte: production of platelets
e. eosinophil: transport of oxygen - Answer c
which of the following statements in relation to neutrophils is NOT true?
a. neutrophils are mobilised from the bone marrow to sites of infection, where they are
needed
b. neutrophils are phagocytic cells
c. neutrophils form pus, which consists primarily of dead neutrophils
d. there are more neutrophils than erythrocytes in the blood
e. dead neutrophils at sites of infection are removed by macrophages
Answer d
which of the following statements is/are true regarding B and T cells?
a. mature B cells can produce antibodies but the immature B cells express BCRs on its
surface
b. T cells are present in lymph node
c. B and T cells with adaptive immune system
d. all of the above - Answer d
which of the following is not characteristic of innate immunity?
a. inflammation
b. cytokine production
c. fast response
,d. highly specific for a particular pathogen - Answer d
Which of the following does NOT describe adaptive immunity?
a. each lymphocyte has a unique specificity
b. gene rearrangement occurs in B and T cells
c. the lymphocytes recognizing the pathogen can persist and provide long-term memory
d. most circulating lymphocytes will play a role in responding to a pathogen
e. the response time for adaptive immunity is slower than for innate immunity - Answer d
The CDC estimates that almost 15000 people die each year from C. diff infections. What
is the major cause of these infections throughout the country?
a. virulent strains of this normally non-pathogenic bacteria
b. fecal transplants that are not correctly administered
c. contaminated food or poor hygiene practices in hospitals
d. depopulation of the gut micro biome by antibiotic use
e. genetic deficiency in the Reg3 gamma protein - Answer d
All of the following are examples of chemical barriers of innate immunity except ___.
, a. lysozyme
b. fatty acids
c. proteases
d. normal microbiota
e. lactic acid - Answer d
primary lymphoid tissues are the sites where lymphocytes _____, whereas secondary
lymphoid tissues ____.
a. are produced; die
b. encounter pathogens; undergo stimulation
c. develop and mature; become stimulated
d. undergo clonal selection; differentiate from hematopoietic stem cells - Answer c
When a macrophage first comes into contact with a bacteria at the site of a new wound,
the macrophage will release _____, which initiates an inflammatory response.
a. lysozyme
b. defensins
c. cytokines
d. lymph
e. selectins - Answer c
Which one of the following statements is FALSE regarding lymphoid tissue?
a. Germinal centers are spherical regions within lymph nodes where B cells proliferate
b. Spleen is a lymphoid organ that filters blood
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