Use the Following Information to Answer the Following Questions

question 78

Multiple Choice

Use the following information to answer the following questions.
An otherwise healthy student in your class is infected with EBV, the virus that causes infectious mononucleosis. The same student had already been infected when she was a child, and she had merely experienced a mild sore throat and swollen lymph nodes in her neck. This time, though infected, she does not get sick.
-The following events occur when a mammalian immune system first encounters a pathogen. Which shows the correct sequence in which they occur?
I. Pathogen is destroyed.
II. Lymphocytes secrete antibodies.
III. Antigenic determinants from pathogen bind to antigen receptors on lymphocytes.
IV. Lymphocytes specific to antigenic determinants from pathogen become numerous.
V. Only memory cells remain.

• A)I → III → II → IV → V
• B)III → II → I → V → IV
• C)II → I → IV → III → V
• D)IV → II → III → I → V
• E)III → IV → II → I → V

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