Discussion
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- Question
The role of the M cell is to
Options- 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
- Correct Answer
- pass bacteria or virus to underlying macrophages for processing and presentation of antigen
- 1. Passive immunization is done for
Options- A. tuberculosis
- B. diphtheria
- C. enteric fever
- D. all of these Discuss
- 2. CD8 surface antigen is present in
Options- A. cytotoxic T cells
- B. suppresssor T cells
- C. both (a) and (b)
- D. none of these Discuss
- 3. Which of the following expresses CD3 surface antigen?
Options- A. Granulocytes
- B. T cells
- C. Monocytes
- D. B cells Discuss
- 4. Polymorphonuclear leukocytes (or PMNs)
Options- A. can be attracted to the site of an infection following activation of complement
- B. are derived from bone marrow stem cells
- C. are a type of phagocyte that can engulf and kill bacteria
- D. all of the above Discuss
- 5. Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is
Options- A. actin
- B. interleukin
- C. HLA
- D. CD8 Discuss
- 6. Immunity is not long lasting to
Options- A. influenza
- B. whooping cough
- C. diphtheria
- D. mumps Discuss
- 7. Following are the defenses of the colon except
Options- A. sIgA
- B. fast flow rate
- C. dense resident microbiota
- D. mucus Discuss
- 8. Which of the following is correct?
Options- A. All T Cells are CD4+
- B. An epitope can have multiple antigens
- C. T Cell receptors are generated by random assortment of gene cassettes
- D. MHC Class II molecules are generated by random assortment of gene cassettes Discuss
- 9. Treatment with bacterial endotoxins results blast formation in
Options- A. B cells
- B. T cells
- C. monocytes
- D. none of these Discuss
- 10. T cell receptors (or TCR) on CD4+ T cells
Options- A. recognize peptides not associated with MHC molecules
- B. recognize peptides associated with MHC class I molecules
- C. recognize peptides associated with MHC class II molecules
- D. are secreted out into the environment to bind antigens Discuss
Immune System problems
Search Results
Correct Answer: diphtheria
Correct Answer: both (a) and (b)
Correct Answer: T cells
Correct Answer: all of the above
Correct Answer: CD8
Correct Answer: influenza
Correct Answer: fast flow rate
Correct Answer: T Cell receptors are generated by random assortment of gene cassettes
Correct Answer: B cells
Correct Answer: recognize peptides associated with MHC class II molecules
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