A single DNA unit that enables the simultaneous regulation of more than one coding region in response to environmental changes is called a(n)
A) promoter.
B) operator.
C) regulator.
D) inducer.
E) operon.
E) operon.
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Pathogenicity is the ability
A) of the host to inflict damage on the pathogen. B) of the host to resist damage by the pathogen. C) of the pathogen to inflict damage on the host. D) None of these are correct.
The nodular, red, translucent surface material of a healing wound is called
A. soluble skin. B. irritated scab. C. granulation tissue. D. abscess.
Which amoebozoan spends most of their life cycle as a multinucleated mass that streams along surfaces, feeding on microbes and organic matter?
a. all slime molds b. cellular slime molds c. plasmodial slime molds d. amoebas e. spore-bearing fruiting bodies
What global climatic change gave gymnosperms an advantage over ferns?
A) the climate becoming hotter and wetter B) increased fluctuations in global climate temperatures C) the climate becoming cooler and drier D) the climate becoming hotter and drier