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Transcription and Regulation

Transcription and Regulation
Promoters for tRNAs are located

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

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

RNA polymerase
DNA molecule
DNA polymerase
Both DNA & RNA polymerase

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

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

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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

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

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Transcription and Regulation
Transcription factors are

TATA boxes
promoters
proteins which bind to DNA and regulate transcription
CATT boxes

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