The Immune System Answers

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Which best describes the purpose of a fever?

A
to make the body too hot for the bacteria to live
B
to make the body too cold for the bacteria to live
C
to stimulate lymphocytes to make antibodies
D
to stimulate an increased production of sweat
3

James was exposed to a pathogen when he was 10 years old and felt ill.What would most likely happen if he were exposed to the same pathogen when he is 12 years old?

A
His body would destroy the pathogen before he felt symptoms.
B
His reaction to the pathogen would be worse than the first.
C
His antibodies would decrease, since he had been exposed already.
D
New types of antibodies would be made in response to the second exposure.
7

If a pathogen on food got past saliva, which additional defenses in the first line of defense would the pathogen contact?

A
stomach acid and lymphocytes
B
lymphocytes and phagocytes
C
phagocytes and mucus
D
mucus and stomach acid
8

waxbilemucuspus

A
wax
B
bile
C
mucus
D
pus
9

Which statement describes many of the structures involved in the first line of defense of the immune system?

A
They have contact with the external environment.
B
They are internal and contact the pathogen through blood.
C
They produce B-cells in response to a pathogen.
D
They produce T-cells in response to a pathogen.

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