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Transcription and Regulation

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

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

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Transcription and Regulation
RNA polymerase holoenzyme initiates transcription which involves

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

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Transcription and Regulation
Rho-dependent termination of transcription in E. coli

requires about 50 nucleotides of uncomplexed mRNA
removes mRNA and holoenzyme from the DNA
both (a) and (b)
requires ATP

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

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

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Transcription and Regulation
Enhancers are regions that

modulate transcription
are CAT box binding proteins
bind RNA polymerase
are adjacent to the TATA box

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Transcription and Regulation
In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as

TATA box
SV40 region
Shine Dalgarno region
CATT

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