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.

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Definitions:

Genetic Diversity

The total number of genetic characteristics in the genetic makeup of a species, contributing to its ability to adapt to its environment.

Founder Effect

A form of genetic drift where a new population is established by a very small number of individuals, leading to reduced genetic variation from the original population.

Human Populations

Groups of humans living in a specific geographic area, characterized by shared genetics, culture, and societal structures.

Genetic Diversity

The total number of genetic characteristics in the genetic makeup of a species, contributing to species survival and adaptation.