Which of the Following Statements About the Antigen-Presenting Function of Macrophages

question 16

Multiple Choice

Which of the following statements about the antigen-presenting function of macrophages is NOT correct?

• A)Macrophages are particularly important at presenting peptides derived from particulate or opsonized antigens that are internalized by phagocytosis.
• B)Macrophages become activated by the helper T cells to which they present microbial peptides,and as a result of this activation they become efficient at killing the microbes.
• C)Resting macrophages express low levels of class II MHC molecules,but higher class II MHC expression is induced on activation by the T cells to which they present antigen.
• D)Macrophages express highly variable,high-affinity receptors for many different antigens,and these receptors facilitate the internalization of the antigens for processing and presentation.
• E)Macrophages present antigen to T cells in lymphoid organs and many nonlymphoid organs.

---

Definitions:

Intercepts

Points where a graph intersects the axes; the x-intercept is where the graph crosses the x-axis, and the y-intercept is where it crosses the y-axis.

Parabola

A specific type of curve on a graph, represented by a quadratic function, characterized by its symmetric shape which can open upwards or downwards.

Graph

A visual representation of data or mathematical functions typically consisting of points on a coordinate plane.

Standard Form

A way of writing numbers, particularly very large or very small numbers, using powers of ten; also refers to a canonical form of equations in mathematics.