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Science Eight Chapter Three
Test Description: Science 8 Chapter 3
Instructions: Answer all questions to get your test result.
1) Pathogens on the skin can be killed by
A
oils on your skin
B
neither sweat nor oil on your skin
C
both sweat and oil on your skin
D
sweat
2) What are the two types of immune response?
A
pathogen and antigen
B
innate and acquired
C
direct and indirect
D
first line and second line
3) The body's second line of defense is to
A
keep pathogens out of the body
B
recognize pathogens
C
attack pathogens
D
wait a week to develop an immune response to pathogens
4) Why are white blood cells sent to the part of the body that is infected by pathogens?
A
to destroy the pathogens
B
to provide immunity
C
to supply blood to the infected area
D
to heal the infection
5) The role of helper T cells is
A
neither A nor B
B
both A and B
C
to find antigens and signal B cells to produce antibodies
D
to wipe out antigens and pathogens on their own
6) White blood cells...
A
destroy antigens and pathogens
B
swallow up invading pathogens
C
are sent to the part of hte body that is infected by the pathogens
D
are cells that are carried in the blood to fight infections in the body
7) A vaccine works by stimulating your immune system to
A
reduce the number of T cells
B
produce more antibodies
C
produce more antigens
D
reduce the number of B cells
8) AIDS is caused by
A
blood
B
virus
C
semen
D
bacteria
9) In a severe allergic reaction
A
a person may have great trouble breathing
B
the immune system needs to make more antibodies
C
the immune system cannot trigger the B cells
D
a person could die from infection
10) HIV attacks
A
the blood
B
the semen
C
the killer T cells
D
the helper T cells
*select an answer for all questions
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