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Transcription and Regulation

Transcription and Regulation
Transcription begins

downstream from the start codon
upstream from the start codon
none of these
at the start codon

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Transcription and Regulation
In prokaryotes, transcription is

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

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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

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

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Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

recognition of the -10 sequence and -35 sequence
None of these
recognition of the -35 sequence only
recognition of the -10 sequence only

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Transcription and Regulation
Upstream regions which are essential for correct transcription are called

enhancers
transcription factors
promoters
start codons

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