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Transcription and Regulation

Transcription and Regulation
Transcription results in

complementary DNA
Okazaki fragments
messenger RNA
an amino acid chain

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

only active inside the cell
multisubunit enzymes
highly glycosylated in their active forms
interchangable with DNA polymerases

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
Upstream regions which are essential for correct transcription are called

promoters
enhancers
start codons
transcription factors

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Transcription and Regulation
The closed complex at bacterial promoters is

bound more tightly when repressors are present
not affected by promoter mutations
not affected by activator proteins
in equilibrium with free RNA polymerase and the promoter

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Transcription and Regulation
Which of the following is necessary for transcription to occur?

Both DNA & RNA polymerase
RNA polymerase
DNA molecule
DNA polymerase

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