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Transcription and Regulation

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

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

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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Transcription and Regulation
In prokaryotes, transcription is

terminated by a protein called rho
terminated by a poly A sequence
terminated by a start codon
terminated by the stop codon

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

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

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Transcription and Regulation
The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed

oriC regions.
Shine Dalgarno sequences.
start codons.
promoters.

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Transcription and Regulation
Immediately after transcription

both (a) and (b)
a poly adenylation signal is added
a methylated guanine cap is added to the 31 end of the transcript
a methylated guanine cap is added to the 51 end of the transcript

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