5. Gene Regulation

Signal Integration — Quiz

Test your understanding of signal integration with 5 practice questions.

Practice Questions

Question 1

Under what biochemical condition does a push–pull signaling module exhibit zero‐order ultrasensitivity?

Question 2

Which network motif is capable of fold‐change detection, enabling a signaling circuit to respond to proportional changes in input rather than absolute concentration levels?

Question 3

Which signaling network motif functions as a low‐pass filter, attenuating rapid input fluctuations while allowing slow, sustained signals to pass?

Question 4

Using the Hill equation $f=\frac{[S]^n}{K^n+[S]^n}$ with $n=3$, $K=5\,\mu M$, and $[S]=10\,\mu M$, what is the fractional occupancy f?

Question 5

A promoter initiates transcription only when either transcription factor A or transcription factor B binds, but not when both are bound. Which logical operation does this represent?