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