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Transcription and Regulation

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

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

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Transcription and Regulation
RNA is synthesized on a DNA template in a process called __________ , which utilizes the enzyme __________

translation, RNA polymerase
transcription, RNA polymerase
replication, DNA polymerase
transcription, DNA polymerase

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 5S rRNA precursor molecule
a single 45S rRNA precursor molecule
a single 28S rRNA precursor molecule
a single 18S rRNA precursor molecule

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

RNA polymerase
DNA polymerase
DNA molecule
Both DNA & RNA polymerase

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

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

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