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Transcription and Regulation

Transcription and Regulation
Enhancers are regions that

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

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Transcription and Regulation
The binding of lac repressor to DNA could be considered to be analogous to

uncompetitive inhibition of an enzyme
allosteric effects in enzyme regulation
competitive inhibition of an enzyme
mixed-type inhibition of an enzyme

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Transcription and Regulation
The nucleons of eukaryotic cell has

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

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

promoters
enhancers
transcription factors
start codons

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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Transcription and Regulation
The closed complex at bacterial promoters is

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

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