Question

Two-component regulatory systems rely on a balance of phosphorylation and dephosphorylation of sensor kinases and response regulators. If the response regulator became permanently phosphorylated due to lack of phosphatase activity, which of the following would NOT happen? Hints O The cell would become more sensitive to the environmental stimulus The cell would become insensitive to the environmental stimulus. The cell would not be able to "reset" its response cycle. O The operon controlled by the response regulator would be always transcribed or never transcribed, depending upon the regulatory role of the response regulator. Submit My Answers Give Up

Answer 1

answer (a) the cell would become more sensitive to the environmental stimulus will not happen because the cell will lose its ability to maintain response cycle due to the disturbance in de/phosphorylation system which maintains cell response to a particular environmental stimulus.