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Transcription and Regulation

Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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

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Transcription and Regulation
Enhancers are regions that

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

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Transcription and Regulation
The complex of RNA polymerase, DNA template and new RNA transcript is called

a translation bubble
none of these
replication bubble
transcription bubble

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Transcription and Regulation
Transcription begins

at the start codon
downstream from the start codon
none of these
upstream from the start codon

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Transcription and Regulation
Transcription factors are

TATA boxes
promoters
proteins which bind to DNA and regulate transcription
CATT boxes

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