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Select the one best response to each question!
Where are all undifferentiated lymphocytes made?
|1. Which of the following is a primary lymphoid organ?
a. Lymph node
|2. What type of cells would be found in a primary follicle?
a. Unstimulated B cells
b. Germinal centers
c. Plasma cells
d. Memory cells
|3. Which of the following is true of NK cells?
a. They rely on memory for antigen recognition.
b. They share antigens with B cells.
c. They are found mainly in lymph nodes.
d. They recognize a lack of MHC proteins.
|4. Where are all undifferentiated lymphocytes made?
a. Bone marrow
d. Lymph nodes
|5. In the thymus, positive selection of immature T cells is
based upon recognition of which of the following?
b. Stress proteins
c. MHC antigens
d. μ chains
|6. Which of these are found on a mature B cell?
a. IgG and IgD
b. IgM and IgD
c. Alpha and beta chains
|7. Which receptor on T cells is responsible for rosetting with sheep red blood cells?
|8. Which of the following can be attributed to antigenstimulated T cells?
a. Humoral response
b. Plasma cells
|9. Which is a distinguishing feature of a pre-B cell?
a. μ chains in the cytoplasm
b. Complete IgM on the surface
c. Presence of CD21 antigen
d. Presence of CD25 antigen
|10. When does genetic rearrangement for coding of light chains take place?
a. Before the pre-B cell stage
b. As the cell becomes an immature B cell
c. Not until the cell becomes a mature B cell
d. When the B cell becomes a plasma cell
|11. Which of the following antigens are found on the T cell subset known as helper/inducers?
|12. Where does the major portion of antibody production occur?
a. Peripheral blood
b. Bone marrow
d. Lymph nodes
|13. Which of the following would represent a doublenegative thymocyte?
|14. Which of the following best describes the T-cell receptor for antigen?
a. It consists of IgM and IgD molecules.
b. It is the same for all T cells.
c. It is present in the double-negative stage.
d. Alpha and beta chains are unique for each antigen.