A crucial step in the regulation of most bacterial genes occurs
A) at transcription initiation.
B) during RNA splicing.
C) during nuclear export of mRNA.
D) when nonsense suppressors translate mRNAs.
A) at transcription initiation.
Biology & Microbiology
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Most conifers are ____
a. nonvascular b. dikaryotic c. deciduous d. seedless e. evergreen
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Food chains in the ocean depths tend to be long
because these habitats have a. an abundance of producers. b. stable environmental conditions. c. a variety of energy sources. d. an abundance of decomposers. e. small numbers of predators.
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The ventilation of insect tracheal tubes is dependent upon the presence of:
a. pores. b. alveoli. c. gills. d. spiracles. e. opercula
Biology & Microbiology
ATG is a DNA triplet that codes for an amino acid. Which mRNA codon will pair with the ATG triplet?
A. ATG B. GTU C. TAC D. UAC
Biology & Microbiology