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Transcription and Regulation

Transcription and Regulation
The nucleons of eukaryotic cell has

all of these
RNA polymerase II
RNA polymerase I
RNA polymerase III

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

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

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

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

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

sigma subunit
both (a) and (b)
beta subunit
alpha subunit

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

start codons
promoters
transcription factors
enhancers

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

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

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