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Transcription and Regulation

Transcription and Regulation
The nucleons of eukaryotic cell has

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

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

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

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

promoters
transcription factors
enhancers
start codons

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Transcription and Regulation
In prokaryotes, transcription is

terminated by the stop codon
terminated by a poly A sequence
terminated by a protein called rho
terminated by a start codon

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Transcription and Regulation
Transcription factors are

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

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Transcription and Regulation
Transcription results in

complementary DNA
Okazaki fragments
messenger RNA
an amino acid chain

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