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Bio10B-3:  The body's defenses

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

All of the following possess mucous membranes except the
a.
digestive tract.
c.
nasal passages.
b.
surface of the skin.
d.
vagina.
 

 2. 

White blood cells that ingest invading microbes and cellular debris resulting from microbial attacks are called
a.
macrophages.
c.
natural killer cells.
b.
neutrophils.
d.
complement cells.
 

 3. 

Which of the following pairs is incorrectly associated?
a.
cytotoxic T cells—attack and kill infected cells
b.
helper T cells—activate cytotoxic T cells and B cells
c.
B cells—engulf cells that are infected with microbes
d.
macrophages—consume pathogens and infected cells
 

 4. 

The role of helper T cells in immune responses is to
a.
secrete interleukin-1.
b.
stimulate macrophages to initiate an “alarm signal.”
c.
initiate the activities of neutrophils.
d.
activate two different types of immune system cells.
 

 5. 

Ways you can avoid becoming ill include
a.
staying at home and only interacting with your family.
b.
taking lots of different medications before you get sick.
c.
washing your hands often.
d.
eating only vegetables.
 

 6. 

Which of the following is not an autoimmune disease?
a.
systemic lupus erythematosus
c.
rheumatoid arthritis
b.
multiple sclerosis
d.
influenza
 



 
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