Soils of the tundra are very ____ due to ____
a. old; lack of precipitation
b. young; lack of precipitation
c. old; glaciation
d. young; glaciation
e. thick; high precipitation
d
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Which of the following statements is NOT
generally characteristic of parasites? a. They are specialists and usually are able to affect only one variety of hosts. b. They inflict serious injury and kill their hosts. c. Some reside inside their hosts, whereas others live outside their hosts. d. Their host may be a plant as well as an animal. e. Plants as well as animals can be parasites
________ is a treatment method in which rapidly dividing cells are killed using drugs instead of radiation
Fill in the blank(s) with correct word
A change in a nucleotide sequence that results in addition or deletion of a single nucleotide and largely changes the amino acid sequence of the resulting peptide is known as a
A) nonsense mutation. B) silent mutation. C) missense mutation. D) frameshift mutation. E) none of the above
Characteristics that strongly indicate the presence of pigmented Prevotella or Porphyromonas in a clinical specimen include:
a. yellow-green fluorescence. b. rhizoid margins resembling a "Medusa head" on anaerobic blood agar. c. brick-red fluorescence under long-wavelength ultraviolet (UV) light. d. chartreuse fluorescens.