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Indicate Whether Each of the Following Statements Is True (T)or

Question 46

Matching

Indicate whether each of the following statements is true (T)or false (F). ___

Premises:

Responses:

The CD45RA isoform is associated with stronger signals in response to antigen.

False

Naive B cells are more sensitive to specific antigen than are memory B cells because they express higher levels of co-stimulatory molecules.

True

Memory T cells can persist in the absence of antigen.

T-cell survival is dependent on the cytokines IL-7 and IL-15.

Premises:

The CD45RA isoform is associated with stronger signals in response to antigen.

Naive B cells are more sensitive to specific antigen than are memory B cells because they express higher levels of co-stimulatory molecules.

Memory T cells can persist in the absence of antigen.

T-cell survival is dependent on the cytokines IL-7 and IL-15.

Responses:

False

True

Correct Answer:

Premises:

Responses:

The CD45RA isoform is associated with stronger signals in response to antigen.

Naive B cells are more sensitive to specific antigen than are memory B cells because they express higher levels of co-stimulatory molecules.

Memory T cells can persist in the absence of antigen.

T-cell survival is dependent on the cytokines IL-7 and IL-15.