Topics: Immune Response Quiz
The part of foreign materials that cause a response from the immune system are called _____________________.
A. Antigens
B. Active Immunity
C. Antibodies
D. Antibiotics
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Viruses are not considered living organisms even though they have several characteristics of living things. What is the reason viruses are not considered alive?
A. They are too small.
B. A virus is a living organism.
C. They need a host to reproduce.
D. Viruses do not have DNA/genetic material.