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Transcription and Regulation

Transcription and Regulation
Transcription begins

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

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Transcription and Regulation
The binding of lac repressor to DNA could be considered to be analogous to

uncompetitive inhibition of an enzyme
mixed-type inhibition of an enzyme
competitive inhibition of an enzyme
allosteric effects in enzyme regulation

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Transcription and Regulation
In prokaryotes, transcription is

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

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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
RNA polymerase holoenzyme initiates transcription which involves

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

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

Both DNA & RNA polymerase
RNA polymerase
DNA polymerase
DNA molecule

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