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:

Identical Twins

Twins who develop from a single fertilized egg that splits into two, sharing 100% of their genes, and are thus genetically identical.

Twin Studies

Research studies that compare the similarity between monozygotic (identical) and dizygotic (fraternal) twins to assess genetic and environmental influences.

Adoption Studies

Research investigations that compare the traits and behaviors of adopted children to those of their biological and adoptive families, often used to understand the influence of genetics versus environment.

Heredity

The passing on of traits from parents to their offspring, either through asexual reproduction or sexual reproduction.