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Genetic Regulation Prokaryotes

Genetic Regulation Prokaryotes
Catabolite activating protein exerts __________ control on transcription of the lac operon genes.

may be positive or negative
positive
none of these
negative

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Genetic Regulation Prokaryotes
Tubulin is regulated by

splicing of the tubulin transcript
binding of tubulin to the tubulin translational product
binding of tubulin to tubulin mRNA
binding of tubulin to DNA

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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?

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

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Genetic Regulation Prokaryotes
In the presence of tryptophan in the cell, the repressor is __________

bound to tryptophan
bound to DNA
bound to neither tryptophan nor DNA
bound to both DNA and tryptophan

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Genetic Regulation Prokaryotes
Enhancers differ from promoters in that

they initiate transcription
their orientation can be inverted without effect
they are adjacent to the start codon
they are restricted to a specific gene

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Genetic Regulation Prokaryotes
Sex hormones activate transcription of specific genes by

binding to a transcription factor
binding to RNA polymerase
binding to DNA enhancer region
binding to DNA promoter region

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