★ Bacterial Cell Structure Quiz
What is an antigen?
A. blood cell
B. immunity
C. foreign substance
D. antibody
Select your answer:
Topics:
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Herd Immunity › ViewHerd immunity is a concept that is also called
A. Sheep testing
B. Sleeping during a pandemic
C. Corona Virus
D. Community immunity
Ecology › View
The colors & patterns on a turtles shell help it blend in with the forest floor. This adaptation is called:
A. hibernation.
B. behavior.
C. migration.
D. camouflage.