Which One of the Following Statements Accurately Describes Antigen Recognition

question 1

Multiple Choice

Which one of the following statements accurately describes antigen recognition events in a lymph node during a helper T cell-dependent antibody response to a protein antigen?

• A)Naive B cells and naive T cells simultaneously recognize the intact protein antigen.
• B)Naive B cells recognize intact proteins,generate peptide fragments of these proteins,and present them in complexes with major histocompatibility complex (MHC)molecules to naive helper T cells.
• C)Naive B cells recognize intact proteins,generate peptide fragments of these proteins,and present them in complexes with MHC molecules to differentiated helper T cells.
• D)Naive T cells recognize peptides bound to MHC molecules presented by dendritic cells,and naive B cells recognize the intact protein antigen bound to the surface of follicular dendritic cells.
• E)Differentiated helper T cells recognize peptides bound to MHC molecules on dendritic cells,and the T cells secrete cytokines that promote antibody production by any nearby B cells that have recognized different protein antigens.

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Definitions:

Units Produced

The total number of units of product manufactured during a specific time frame.

Manufacturing Overhead Costs

These are indirect costs related to manufacturing that cannot be directly traced to specific units produced, such as utilities or maintenance expenses.

September

In the Gregorian calendar, it is the month that falls ninth in the sequence.

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Expenses that change in proportion to the level of production or sales activity.