Module Quiz 1

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Mononuclear phagocytes participate in adaptive immunity responses in each of the following ways EXCEPT

Antigen-specific killing of virus-infected cells

Memory lymphocytes:

Are small resting lymphocytes

Which of the following effector molecules can be secreted by macrophages or T cells and function as "messenger molecules" for the immune system?

Cytokines

HIV suppresses immunity by causing which of the following?

Depletion of CD4 cells

Which of the following are antigen-presenting cells found only in the germinal centers of secondary lymphoid follicles?

Follicular dendritic cells

Which of the following is a unique property of the adaptive immune response?

Highly Diverse repertoire of receptor specificities for antigens

Antibodies and T lymphocytes are the respective mediators of which two types of immunity?

Humoral and cell mediated

Which of the following cytokines that can stimulate hematopoiesis?

IL-7

Which of the following best describes clonal expansion in adaptive immune responses?

Increased number of lymphocytes with identical specificities all derived from a single lymphocyte, expand when stimulated by a single antigen

Which of the following will NOT result in an acquired immunodeficiency?

Inherited defect in B cell maturation

Tissue macrophages are derived from which type of circulating blood cell?

Monocyte

Which of the following cell types do NOT have clonally distributed antigen receptors?

Natural killer cells

A vaccine administered may protect from infection the influenza virus one year but will not protect from a different influenza virus the following year? This illustrates which property of the immune system?

Specificity

Antigens that enter the blood are presented to lymphocytes in which of the following organs?

Spleen

Humans with DiGeorge Syndrome suffer from loss of which of the following cells?

T cells

The cortex of the thymus contains which of the following types of cells?

Thymocytes


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