Question

question 7 (1 point) ✓ saved \cell mediated immunity\ refers to b cell activation and plasma cell production. monocyte conversion. t cell responses to antigen. mhc markers on \self\ cell surfaces. question 8 (1 point) ✓ saved an immunoglobulin is made up of four polypeptide chains, two heavy and two light. the hypervariable region which binds the antigen lies in the fab in the fc on the heavy chains on the light chains question 9 (1 point) ✓ saved identify the technique listed below that is not one of the three categories used by microbiologists to diagnose infections. phenotypic genotypic cellulogic immunologic

Explanation:

• Question 7: Cell - mediated immunity is mainly carried out by T cells. B cell activation and plasma cell production are related to humoral immunity. Monocyte conversion is not the core of cell - mediated immunity. MHC markers on "self" cell surfaces are related to antigen presentation but not the direct definition of cell - mediated immunity.
• Question 8: The hypervariable region (antigen - binding site) of an immunoglobulin lies in the Fab (antigen - binding fragment). The Fc region is involved in other functions like complement activation. The hypervariable region is a combination of parts from both heavy and light chains in the Fab region, not just on the heavy or light chains alone.
• Question 9: Microbiologists use phenotypic (observable characteristics), genotypic (genetic makeup), and immunologic (antibody - antigen reactions) methods to diagnose infections. "Cellulogic" is not a recognized category in this context.

Answer:

• Question 7: T cell responses to antigen.
• Question 8: in the \(F_{Ab}\).
• Question 9: cellulogic.