A Research Scientist Is Comparing Surface Antigens X and Y

question 58

Multiple Choice

A research scientist is comparing surface antigens X and Y that come from 2 different viruses.  He obtains antibodies against antigen X from an animal previously exposed to the virus expressing this antigen.  These antibodies are then attached to assay plates.  Next, a fixed quantity of radiolabeled X antigen is added to the plates.  Unlabeled Y antigens are then added in increasing concentrations to each plate, and the plates are washed to remove unbound antigens.  Radioactivity is plotted as a function of Y antigen concentration, as shown in the graph below. Which of the following best describes the results of this experiment?

• A)Antigen X and antigen Y have no epitopes in common
• B)Antigen X and antigen Y have the same epitopes
• C)Antigen Y shares most of the epitopes of antigen X
• D)Antigen Y shares some of the epitopes of antigen X

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Definitions:

General Types

Broad categories or classifications used to group entities based on shared characteristics or attributes.

Organizational Culture

The common principles, convictions, and customs that define an organization and shape the actions of its members.

Four Quadrant Model

A framework often used in various fields to categorize or analyze information in four distinct categories or quadrants, based on two sets of bipolar dimensions.

Organizational Culture

The set of shared beliefs, values, norms, and practices that characterizes an institution or organization.