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Transcription and Regulation

Transcription and Regulation
Transcription begins

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

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Transcription and Regulation
Promoters for tRNAs are located

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

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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

RNA polymerase II
none of these
RNA polymerase I
RNA polymerase III

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Transcription and Regulation
Immediately after transcription

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
both (a) and (b)
a poly adenylation signal is added

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

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

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

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

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