If you were designing a method to specifically inhibit prokaryotic transcription, but not eukaryotic transcription, interfering with which of the following would work best?
A) an intercalating agent
B) recognition of the promoter region
C) DNase activity
D) RNA polymerase II activity
E) ribosomal binding
B) recognition of the promoter region
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Gamma radiation
A. is used to sterilize some food products. B. is a type of nonionizing radiation. C. has a longer wavelength than UV radiation. D. has poor penetrating power.
Which of the following is a homeotic gene that
controls heart development?
a. Dunce b. groucho c. Tinman d. toll e. Pacman
The risk of having a child with Down syndrome due to a chromosomal translocation is independent of maternal age
a. True b. FalseLeukemia is often associated with chromosomal translocations. a. True b. False
Pertussis has the following characteristics, except:
A. pathogen has virulence factors to destroy the action of respiratory cilia. B. catarrhal stage has persistent, hacking coughs with "whoops". C. early stage resembles a cold with nasal discharge and sneezing. D. DTaP immunization will prevent it. E. transmission is by respiratory droplets.