Signal processing is important part of the cell biology. The regulation
of the cellular function is associated. The signals are received by the
receptors at the membrane and act on the kinase to activate the
intermediate chemicals. The intermediate chemicals activate the target
proteins in the cell to pass the message from the cell membrane. The
concentration gradients of the activated chemicals are expected. I will
show the very simple model of the signal processing as a first step to
understand the phenomenon.