16. upon recognition of pathogen, b cells will trigger

a.antibody production and formation of memory cells

b. cell destruction via cytotoxic t cells

c. inflammation and interferon cascades

d. all of the above

17. an infected body cell will display __ and be recognized by__

a. MHC I and MHC II surface markers; cytotoxic and helper tcells

b. MHC I surfacee markers with an antigen; cytotoxic t cells (CD8)

c. MHC II surface markers with ana antigen; helper t cells(CD4)

d. MHC X surface markers with an antigen; cytotoxic and helper tcells

19. what is one example of the fate of a pathogen after it hasbeen tagged by an antibody?

a. antibodies carry the pathogen to lymphoid tissues fordestruction

b. antibodies quickly bind to and degrade the pathogensurface

c. antibodies remove and destroy cellular proteins inside thepathogen

d. antibodies trigger the complement system to lyse thepathogen

20. Upon recognition of a pathogen, the role of the helper tcell (CD4) is to:

a. activate b cells

b. activate cytotoxic t cells

c. attract neutrophils and macrophages

d. all of the above

21. memory b cells within the immune system will respond duringthe ___

a. innate immune response

b. intermediate immune response

c. primary immune response

d. secondary immune response

23. which of the following contains all of the correctstructures in the conducting zone?

a. bronchi, terminal bronchioles, respiratory bronchioles,alveoli

b. nasal cavity, pharynx,larynx, trachea, bronchi, terminalbronchioles

c. pharynx, larynx, trachea, bronchi

d. respiratory bronchi, alveoli

24. the function of cilia and mucus in the respiratory tractis:

a. facilitate movement of particles into the lungs

b. increases surface area for diffusion in the lungs

c. trap and remove debris from the respiratory passageways

d. all of the above