The only virus that has been globally eradicated is:
a. chicken pox.
b. cowpox.
c. smallpox.
d. swinepox.
C
Global eradication of a viral disease has only occurred with smallpox. The eradication of any viral disease requires no animal reservoir, a lack of recurrent infectivity, one or few stable serotypes, and an effective vaccine.
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The natural habitat of Chryseobacterium sp. can best be described as the:
a. mucous membranes of animals. b. gastrointestinal tract of humans and other animals. c. natural environment. d. genitourinary tract of animals.
You isolate a plant that expresses a phytochrome mutant that is always in the
Pfr form. You expect these plants will germinate A. not at all. B. regardless of the light conditions. C. later than normal plants. D. similarly to normal plants.
Which of the following items that are commonly added during food preparation can be considered a preservative?
A) apple juice B) meat broth C) garlic D) yeast E) whey
The genus of pathogenic cocci responsible for a wide range of human disease and whose members grow in chains is (Staphylococcus/Streptococcus/Enterococcus).
Fill in the blank(s) with the appropriate word(s).