Question

xam Name MULTIPLE CHOICE. Choose the one alternative that best com pletes the statement or answers the question 153 The process whereby neutrophils and other white blood cells are attracted to an inflammatory site is called D) chemotaxis phagocytosis B) diapedesis C) TRUE/FALSE. Shade "A" if the statement is true and "B if the statement is false. I @ Substances capable of triggering the adaptive immune system and provoking an immune respono are called antigens. I 7 It is our genes, not antigens, that determine what specific foreign substances our immune system will be able to recognize and resist. 18 Monoclonal antibodies can be specific for several antigenic determinants. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the qu 19) Helper T cells A) function in the adaptive immune system activation B) often function to décrease the immune response C) bind tightly to target cells and release a lymphotoxin called perfori D) release B7 proteins Cytotoxic T cells 2 A) self-destruct once the antigen has been neutralized B) function mainly to stimulate the proliferation of other T cell populations C) require the double recognition signal of 1 MHC plus II MHC on the target cell in function D) are the only T cells that can directly attack and kill other cells 2h B lymphocytes develop immunocompetence in the A) thymus C) spleen D) b B) lymph nodes The antibody molecule is held together by B) sodium 2 bonds C) hydroger TRUE/FALSE. Shade "A" if the statement is true and "B" if the statement is false. 23 Some immunocompetent cells will never be called to service in our lifetime.

Answer 1

Ans15. D

Chemotaxis is the process whereby neutrophils and WBCs are attracted to site of inflammation.

Ans16. A - True

Ans17. B - False. It depends on the antigens.

Ans18. B - False. It is specific for single antigenic determinants.

Ans19. A. Function in the adaptive immune system activation.

Ans20. D. Directly kill and attack other cells.

Ans21. D. Bone marrow

Ans22. A - disulfide bonds