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WorksheetsLines of Defense
Total questions: 12
Worksheet time: 7mins
What is an antigen
a white blood cell
toxin/foreign substance
blood protein
a substance that makes antibodies
The purpose of a non-specific defense is to:
target specific pathogens
keep unwanted things from entering
provide barrier against microbes
respond to pathogens
A specific defense targets specific antigens
true
false
How does skin immunity work
it is oily and acidic, so it’s not easy to penetrate
the color fights off antigens
helps keep things in and out
all of the above
What is the purpose of nose hairs?
acts as a natural filter that prevents dust and pollen
prevents bacteria from reaching lungs and causing infection
wet hairs help particles stick
all of the above
Which of the following correctly describes the purpose of the mucus membrane
traps microbes and helps send them away
provides barrier against microbes
lines internal surfaces exposed to the outside
all of the above
What is the purpose of inflammation in the immune system
to search for suspicious objects and release signaling molecules like histamine
to bring in white blood cells to fight the infection
both answers 1 and 2 are correct
What is Histamine
to bring in white blood cells to help fight the infection
allows fluid to flow to affected area
to engulf and absorb bacteria
makes blood vessels permeable
Do b-cells make antibodies or act as white blood cells
both
neither
Antibodies are blood proteins that are produced in response to an antigen
false
true
Do t-cells act as soldiers and search and destroy targeted antigens?
yes, they are the core of the adaptive immunity
no, they make antibodies
The purpose of a phagocyte is to engulf and absorb bacteria
true
false
