Use the Following Information to Answer the Following Questions

question 73

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.
-What are CD4 and CD8?

• A)proteins secreted by antigen-presenting cells
• B)receptors present on the surface of natural killer (NK)cells
• C)T-independent antigens
• D)molecules present on the surface of T cells where they enhance cellular interaction
• E)molecules on the surface of antigen-presenting cells where they enhance B cell activity

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Definitions:

Monomer Units

Individual, small molecules that can bind chemically to other monomers to form polymers through repeated sequences.

Repeating Segment

A consistent sequence of atoms or groups within a polymer that repeats along its chain.

Nylon 6,6

A type of polyamide made by polymerizing hexamethylene diamine and adipic acid, known for its strong, elastic, and resistant properties, used in textiles and engineering plastics.

Monomers

Simple molecules that can undergo polymerization to form more complex molecules called polymers, serving as the building blocks for a variety of macromolecules.