Which of the following statements best describes the habitats of Acidovorax, Sphingobacterium, and Sphingomonas?
a. Habitats are limited to the upper respira-tory tract of various mammals.
b. Habitats are unknown.
c. Habitats are limited to the soil and water environment.
d. Habitats are limited mostly to water sources.
B
These organisms are rarely isolated from human materials, and they have an extremely limited role as agents of infection. Because they are rarely encountered in the clinical setting, little in-formation exists regarding their epidemiologic patterns, capacity to cause human infections, and potential for antimicrobial resistance.
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Viral capsids are generally constructed without any outside aid once the subunits have been synthesized. This process is called
A. spontaneous maturation. B. facilitated assembly. C. self-maturation. D. self-assembly.
What is the difference between a gene knockout and a gene knockdown?
What will be an ideal response?
What popular belief of the time did Lyell's theory of uniformity challenge?
a. Fossils are not evidence of extinct species. b. The Earth is only 6,000 years old. c. The Earth does not change over time. d. Species do not change over time. e. All animals exists in perfect form.
The largest markets for both U.S. exports and imports in 2011 were
a. China/Japan. b. Western Europe. c. the Pacific Rim countries. d. Canada/Mexico.