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Transcription and Regulation

Transcription and Regulation
RNA polymerase in prokaryotes has a removable

both (a) and (b)
sigma subunit
alpha subunit
beta subunit

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Transcription and Regulation
RNA is synthesized on a DNA template in a process called __________ , which utilizes the enzyme __________

transcription, RNA polymerase
replication, DNA polymerase
translation, RNA polymerase
transcription, DNA polymerase

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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
Each tRNA molecule has a cloverleaf secondary structure consisting of

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

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

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

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

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

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