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Transcription and Regulation

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

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

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Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

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

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Transcription and Regulation
Immediately after transcription

a poly adenylation signal is added
both (a) and (b)
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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Transcription and Regulation
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is

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

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Transcription and Regulation
The closed complex at bacterial promoters is

bound more tightly when repressors are present
not affected by activator proteins
in equilibrium with free RNA polymerase and the promoter
not affected by promoter mutations

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Transcription and Regulation
Transcription results in

messenger RNA
Okazaki fragments
complementary DNA
an amino acid chain

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