The purposeful artificial stimulation of active immunity to a particular infectious disease is known as
A) immunodeficiency.
B) hypersensitivity.
C) immunization.
D) opsonization.
Answer: C
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Which of the following are primate characteristics? Check all that apply.
_____ grasping hand _____ large brain _____ claws on each digit _____ forward-facing eyes _____ complex social behavior
The cause of malaria is a ____
a. bacterium b. protist c. virus d. fungus e. animal
Some scientists predict that as atmospheric carbon dioxide levels increase, the pH of the oceans will drop, thus threatening coral and organisms within shells. What is the best explanation for this hypothesis?
A. Carbon dioxide combines with water to form a base. B. Carbon dioxide combines with water to form an acid. C. As the oceans warm, more water is evaporated, lowering the pH of the remaining water. D. As the pH of the ocean decreases, more carbon dioxide is released into the atmosphere. E. As the pH of the ocean increases, more carbon dioxide is released into the atmosphere.
Which of the following identifies a group of DNA viruses?
a. retroviruses b. herpesviruses c. paramyxoviruses d. filovirus e. picornaviruses