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Transcription and Regulation

Transcription and Regulation
The nucleons of eukaryotic cell has

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

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Transcription and Regulation
Promoters for tRNAs are located

both (a) and (b)
upstream from the start codon
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

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

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

two stem loops
either (a) or (b)
four stem loops
three stem loops

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

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

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