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Transcription and Regulation

Transcription and Regulation
Enhancers are regions that

are adjacent to the TATA box
are CAT box binding proteins
modulate transcription
bind RNA polymerase

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Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 28S rRNA precursor molecule
a single 5S rRNA precursor molecule
a single 45S rRNA precursor molecule
a single 18S rRNA precursor molecule

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Transcription and Regulation
Promoters for tRNAs are located

none of these
upstream from the start codon
downstream from the start codon
both (a) and (b)

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Transcription and Regulation
Rho-dependent termination of transcription in E. coli

both (a) and (b)
removes mRNA and holoenzyme from the DNA
requires ATP
requires about 50 nucleotides of uncomplexed mRNA

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

either (a) or (b)
two stem loops
four stem loops
three stem loops

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Transcription and Regulation
The nucleons of eukaryotic cell has

RNA polymerase III
all of these
RNA polymerase II
RNA polymerase I

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