If a Non-Professional Antigen-Presenting Cell That Lacks Co-Stimulatory Molecules Presents

question 34

Multiple Choice

If a non-professional antigen-presenting cell that lacks co-stimulatory molecules presents peptide:MHC complexes to a T cell specific for that peptide,then _____.

• A)the T cell delivers a signal to the non-professional antigen-presenting cell to activate the expression of co-stimulatory molecules.
• B)the T cell begins to express the α chain of the IL-2 receptor.
• C)the T cell differentiates into a T_H1 cell.
• D)T-cell tolerance occurs as a result of anergy.
• E)the T cell is more heavily reliant on signals transmitted through CD4 or CD8 in order to become activated.

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Definitions:

Lymphatic System

Part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph towards the heart.

Spleen

An organ involved in filtering blood, storing red blood cells, and playing a role in immunity as part of the lymphatic system.

Thyroid Gland

An endocrine gland located in the neck that produces hormones regulating growth, development, and metabolic rate.

Immune Response

The body's defensive reaction to foreign substances or pathogens, involving recognition, attack, and elimination.