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Genetic Regulation Prokaryotes

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

O
P
none of these
I

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

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

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

3
2
1
4

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Genetic Regulation Prokaryotes
A frameshift mutation occurs in the sigma subunit gene transcribed as part of SPOl early genes. What will be the immediate result?

Middle genes will not be transcribed
Infection will proceed as usual
Early genes will not be translated
The bacterial host will lyse immediately

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Genetic Regulation Prokaryotes
Genes which need to be coordinately regulated but are not in operons may be regulated by

TATA boxes
CAAT regions
common transcription factor binding domains
GC regions

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Genetic Regulation Prokaryotes
In the presence of high levels of tryptophan

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

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