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TRANSCRIPTION AND REGULATION

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

transcription bubble
a translation bubble
replication bubble
none of these

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
Promoters for tRNAs are located

upstream from the start codon
none of these
both (a) and (b)
downstream from the start codon

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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
uncompetitive inhibition of an enzyme
allosteric effects in enzyme regulation
competitive inhibition of an enzyme

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

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

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