14. Migration of white blood cells into an area of dead or dying tissue is based

Question

14. Migration of white blood cells into an area of dead or dying tissue is based upon: a. release of hormones b. chemotaxis c. neural impulses d. differentiation of cells in the immediate environment 15. CSb6,7,8,9 is usually generated by: a. flesh- eating microorganisms b, interleukin 2 secretion c. mucous production d. serum complement activation 16. Apoptosis is: a. attack on the self b. another name for cloning c. pathological cell death d. determined by the action of genes e. none of the above 17. Which of the following is an opsonizing structure with 10 antigen binding sites? a. IgA b. IgG c. IgE d. IgM 18. Which of the following is present in body secretions like tears or mucous? a. IgE b. Ig A c. IgD d. Ig G e. Ig M 19. When a leukocyte leaves the blood stream by extending a foot- process, it is called a. chemotaxis b. leukocytosis c. pavementing d. diapedesis e. none of the above 20. Plasma cells: a. recognize antigen in association with MHCI b. activate helper T cells c. secrete antibody d. phagocytize bacteria

Explanation / Answer

17. Whicj antibody has 10 antigen binding sites

D. IgM

18. Which antibidy is present in secretion

B. IgA

19. When a leucocyte leaves the blood stream by extending foot processes ,it is called

Chemotaxis

20. Plasma cells

C. Secrete antibody

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