Exercise: Immune System

Questions for: Immune System

Which of the following statements is false regarding B cells?
A:
B cells can undergo class switching and produce a different antibody type
B:
B one marrow stem cells migrate to the thymus and develop into B cells
C:
B cells synthesize antibodies and put them on their cell surface
D:
B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow
Answer: B
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The role of the M cell is to
A:
trap virus in mucus and prevent entry
B:
induce apoptosis in virus-infected small intestinal epithelia cells
C:
pass bacteria or virus to underlying macrophages for processing and presentation of antigen
D:
they use their cilia to propel mucus out of the small intestine
Answer: C
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Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is
A:
actin
B:
interleukin
C:
HLA
D:
CD8
Answer: D
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Lysozyme is present in
A:
sweat
B:
Cerebro spinal fluid (CSF)
C:
urine
D:
saliva
Answer: D
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Immunity is not long lasting to
A:
influenza
B:
whooping cough
C:
diphtheria
D:
mumps
Answer: A
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Ad Slot (Above Pagination)
Quiz