Exercise: Genetic Regulation Prokaryotes

Questions for: Genetic Regulation Prokaryotes

Alternate splicing of RNA transcripts is a mechanism to regulate
A:
tubulin
B:
tachykinins
C:
DNA methylation
D:
leucine zippers
Answer: B
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Why are several structural genes regulated as a unit in bacteria?
A:
An accident of evolution
B:
It allows coordinating regulation of genes with a common function
C:
The bacteria chromosome is so small; many different genes must be controlled by the same promoter
D:
none of the above
Answer: B
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DNA is methylated at
A:
AC sequences
B:
TATA sequences
C:
CAAT sequences
D:
CG sequences
Answer: D
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Catabolite activating protein exerts __________ control on transcription of the lac operon genes.
A:
positive
B:
negative
C:
may be positive or negative
D:
none of these
Answer: A
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In the presence of tryptophan in the cell, the repressor is __________
A:
bound to tryptophan
B:
bound to DNA
C:
bound to both DNA and tryptophan
D:
bound to neither tryptophan nor DNA
Answer: C
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