Actinomycetes are usually found in ________ habitats.
A. marine
B. soil
C. medical
D. freshwater
Answer: B
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Uses of chlorofluorocarbons (CFCs) include all
EXCEPT which of the following? a. gasoline additives b. aerosol propellants c. refrigeration coolants d. manufacture of plastic foam e. components of solvents
If you are exposed to ancient Peruvian art for the first time and experience some difficulty trying to figure out the meaning and quality of the art, you would be forced to simply examine the specific elements of the art since you do not have any background cultural information to use as a context in understanding the art. This would be an example of
a. bottom-up processing.
b. top-down processing.
c. left-right processing.
d. right-left processing
Researchers have proposed that the herpesvirus responsible for the childhood illness roseola may cause a type of T cell leukemia. Ninety percent of the population has been infected by the virus by two years of age, but the T cell leukemia is relatively rare. The virus can be cultured in the laboratory in tissue culture, but not in mature organisms. Discuss the obstacles to applying Koch's
postulates to the etiology of this disease. What will be an ideal response?
Directional, light-triggered plant development is known as
A. phototropism. B. thigmotropism. C. thigmonasty. D. photomorphogenesis. E. acid-growth movement.