★ Disease, Immunity, and Phatogens Quiz
The diagram shows a pathogen, what is the arrow pointing to on the surface of the pathogen?
A. a molecule called an antigen
B. a molecule called an antibody
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What is the Immune system?
A. The body’s defense system
B. A system that gives support and structure
C. A system that helps you breathe
D. None of the above
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