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TRANSCRIPTION AND REGULATION

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

replication bubble
transcription bubble
a translation bubble
none of these

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
Promoters for tRNAs are located

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

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

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

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

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

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