The eukaryotic transcription initiation complex is
_____ transcription of virtually all genes transcribed by RNA pol II requiring the same suite of general factors.
_____ responsible for highly regulated transcription levels.
_____ only associated with RNA polymerase I.
_____ interactive with activators through DNA looping.
_____ a basal factor associated with RNA pol II after positioning RNA pol II at the start site.
__X__ transcription of virtually all genes transcribed by RNA pol II requiring the same suite of general factors.
__X__ responsible for highly regulated transcription levels.
_____ only associated with RNA polymerase I.
__X__ interactive with activators through DNA looping.
_____ a basal factor associated with RNA pol II after positioning RNA pol II at the start site.
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Inflammation is a nonspecific defensive reaction to a tissue injury.
Answer the following statement true (T) or false (F)
An episome is
A. a plasmid that can make bacterial cells resistant to antibiotics. B. a plasmid that gives bacteria the ability to degrade toluene. C. a plasmid that can exist either autonomously in the cytoplasm or as part of a chromosome. D. a plasmid that can turn a bacteria that is harmless into a strain that can cause disease. E. a plasmid that gives bacteria the ability to exchange DNA with another bacterial cell.
Which of the following is least likely to be a cause of
extinction? a. asteroid impact b. human activity c. adaptive radiation d. tectonic activity e. climate change
Selective reabsorption of components of the glomerular filtrate occurs where?
A. glomerulus B. Bowman's capsule C. collecting duct D. loop of Henle