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Genetic Regulation Prokaryotes

Genetic Regulation Prokaryotes
Which of the following is not part of the lac operon?

O
I
P
none of these

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Genetic Regulation Prokaryotes
Which of the following is not a transcription factor?

Helix-turn-helix proteins
Steroid hormones
Leucine zipper proteins
Zinc finger proteins

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Genetic Regulation Prokaryotes
Which of the following occur in the presence of glucose?

lac Z gene expression is increased
Binding of CAP-cAMP complex to the promoter area decreases
None of these
cAMP increases

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Genetic Regulation Prokaryotes
The lac operon is translated into __________ proteins.

3
1
2
4

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Genetic Regulation Prokaryotes
Methylated gene are

dynamic
active
either (a) or (b)
silent

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Genetic Regulation Prokaryotes
In the presence of high levels of tryptophan

None of these
attenuator terminates transcription
attenuator propogates transcription
attenuator allows transcription of trp structural genes

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