Why are molecular methods particularly useful for identification of microbes when they are difficult to grow?
A. While all microbes can (and should) be grown for identification purposes, sometimes it's simply faster to use a molecular technique.
B. They AREN'T useful-growing a microbe is clearly the only way to properly identify it.
C. Since all microbes use DNA, and we can sometimes detect and identify them through even very small amounts of their DNA, molecular methods allow us to identify microbes even when they can't be grown at all.
D. Molecular methods are far cheaper methods than growing microbes for identification.
C
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The species richness of trees can be predicted by
A. the time hypothesis. B. species-area effect. C. patterns of smaller insects. D. the evapotranspiration rate. E. the species-area effect.
Plump coccobacilli that tend to resist alcohol decolorization and may be mistaken for Neisseria spp. are:
a. Bordetella spp. b. S. maltophilia. c. Acinetobacter spp. d. P. oryzihabitans.
An important bacterial mediated process that occurs on the surface of plant roots is called ________ nitrogen fixation.
What will be an ideal response?
Considering the table above, which of the following is likely true?
a. Eventually pharmaceutical companies will run out of options for the development of new anti-biotics. b. Eventually pharmaceutical companies will need to come up with new categories of antibiotics that work in ways not yet conceived. c. Physicians will need to work in local and globally coordinated ways to assure that newly de-veloped antibiotics are not overprescribed. d. All of the above. e. None of the above.