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Clonal Selection

View the animation below, then complete the quiz to test your knowledge of the concept.






1Antibodies are produced by
A)plasma B cells.
B)memory B cells.
C)macrophages.
D)helper T cells.
E)cytotoxic T cells.



2Arrange the following in the proper order in which they occur during clonal selection.
1. Helper T cells are activated.
2. Macrophages ingest antigen.
3. B cells differentiate into plasma cells and memory cells.
A)1, 2, 3
B)2, 1, 3
C)2, 3, 1
D)3, 2, 1
E)3, 1, 2



3B cell differentiation is stimulated by
A)complement proteins.
B)interferons.
C)antibodies.
D)interleukins.
E)lipids.



4Each B cell can react to many different types of antigens.
A)True
B)False



5Helper T-cells interact with target cells by recognizing antigens that are complexed with MHC proteins.
A)True
B)False







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