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Questions and Answers
The response regulator, once phosphorylated, binds to the activator to turn transcription on.
The response regulator, once phosphorylated, binds to the activator to turn transcription on.
True (A)
Porins in Gram-negative bacteria regulate the synthesis of histidine kinases.
Porins in Gram-negative bacteria regulate the synthesis of histidine kinases.
False (B)
Phosphatase activity removes phosphate from the response regulator at a faster rate than kinase activity.
Phosphatase activity removes phosphate from the response regulator at a faster rate than kinase activity.
False (B)
OmpC is synthesized more in bacterial cells when there is low solute concentration.
OmpC is synthesized more in bacterial cells when there is low solute concentration.
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NRII becomes dephosphorylated when excess ammonia is present in the environment.
NRII becomes dephosphorylated when excess ammonia is present in the environment.
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Phosphorylation of NRI by PII leads to the binding of NRI to the activator binding site.
Phosphorylation of NRI by PII leads to the binding of NRI to the activator binding site.
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The dual enzymatic activity of NRII is controlled by the response regulator.
The dual enzymatic activity of NRII is controlled by the response regulator.
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Ammonia limitation results in the binding of PII to UMP.
Ammonia limitation results in the binding of PII to UMP.
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In the absence of ammonia, nitrogen fixation is turned off.
In the absence of ammonia, nitrogen fixation is turned off.
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The Two-Component Regulatory Systems in Bacteria involve sensor kinase and effector kinase.
The Two-Component Regulatory Systems in Bacteria involve sensor kinase and effector kinase.
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