Discussion
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- Question
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
- Correct Answer
- B one marrow stem cells migrate to the thymus and develop into B cells
- 1. Chemically an antigen may be
Options- A. lipid
- B. protein
- C. polysaccharide
- D. any of these Discuss
- 2. Lysozyme is present in
Options- A. sweat
- B. Cerebro spinal fluid (CSF)
- C. urine
- D. saliva Discuss
- 3. 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
- 4. Large parasites such as helminthes may be killed extracellularly by the action of
Options- A. basophils
- B. monocytes
- C. eosinophils
- D. neutrophils Discuss
- 5. 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 Discuss
- 6. Cytotoxic T-cells can be recognized by which of the following cell surface marker?
Options- A. CD4
- B. CD7
- C. CD8
- D. CD9 Discuss
- 7. Slide agglutination reaction is/are useful for the identification of the culture(s) of
Options- A. Shigella
- B. Vibrio cholerae
- C. Salmonella
- D. All of these Discuss
- 8. Counter-immunoelectrophoresis is used for the detection of
Options- A. Meningococcal antigen
- B. Hepatitis B surface antigen
- C. Alpha-fetoprotein
- D. All of these Discuss
- 9. Ring test is used for
Options- A. C-reactive protein test
- B. Ascoli's thermoprecipitation test
- C. typing of streptococci and pneumococci
- D. all of the above Discuss
- 10. In which of the following case a large lattice is formed?
Options- A. Antibody is in excess
- B. Antigens and antibodies are in optimal proportion
- C. Antigen is in excess
- D. None of these Discuss
Immune System problems
Search Results
Correct Answer: any of these
Correct Answer: saliva
Correct Answer: Polymorphonuclear leukocyte (or PMN)
Correct Answer: eosinophils
Correct Answer: CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
Correct Answer: CD8
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: all of the above
Correct Answer: Antigens and antibodies are in optimal proportion
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