Discussion
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- Question
Which of the following is correct for CD8 T cells?
Options- A. CD8 T cells only recognize virus-infected cells
- B. CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells
- C. In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only
- D. CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
- Correct Answer
- CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
- 1. 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
- 2. Treatment with bacterial endotoxins results blast formation in
Options- A. B cells
- B. T cells
- C. monocytes
- D. none of these Discuss
- 3. 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
- 4. Following are the defenses of the colon except
Options- A. sIgA
- B. fast flow rate
- C. dense resident microbiota
- D. mucus Discuss
- 5. Immunity is not long lasting to
Options- A. influenza
- B. whooping cough
- C. diphtheria
- D. mumps Discuss
- 6. Large parasites such as helminthes may be killed extracellularly by the action of
Options- A. basophils
- B. monocytes
- C. eosinophils
- D. neutrophils Discuss
- 7. Which is not an antigen-presenting cell (or APC)?
Options- A. B cell
- B. Polymorphonuclear leukocyte (or PMN)
- C. Dendritic cell
- D. All of the above Discuss
- 8. Lysozyme is present in
Options- A. sweat
- B. Cerebro spinal fluid (CSF)
- C. urine
- D. saliva Discuss
- 9. Chemically an antigen may be
Options- A. lipid
- B. protein
- C. polysaccharide
- D. any of these Discuss
- 10. Which of the following statements is false regarding B cells?
Options- 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 Discuss
Immune System problems
Search Results
Correct Answer: recognize peptides associated with MHC class II molecules
Correct Answer: B cells
Correct Answer: T Cell receptors are generated by random assortment of gene cassettes
Correct Answer: fast flow rate
Correct Answer: influenza
Correct Answer: eosinophils
Correct Answer: Polymorphonuclear leukocyte (or PMN)
Correct Answer: saliva
Correct Answer: any of these
Correct Answer: B one marrow stem cells migrate to the thymus and develop into B cells
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