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Transcription and Regulation

Transcription and Regulation
Enhancers are regions that

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

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

DNA polymerase
RNA polymerase
DNA molecule
Both DNA & RNA polymerase

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

none of these
replication bubble
a translation bubble
transcription bubble

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Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

recognition of the -35 sequence only
None of these
recognition of the -10 sequence and -35 sequence
recognition of the -10 sequence only

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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
The binding of lac repressor to DNA could be considered to be analogous to

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

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