In: Biology
Describe how a signal that is relatively low in number can be amplified within the cell. For a complete answer, you need to include all the players and show how the signal is amplified.
Ans A signal may reach a cell in the form of a single hormone
molecule . . Inside the cell , the signal must be amplified so that
the response is carried out multiple times rather than just be a
single molecule . Amplification is built into the system . Any
molecule that catalyzes a reaction can do so multiple times
producing more than one product molecule . So, each step in the
signaling chain is several step long then there is a great
potential for amplification of the signal . The advantage of signal
amplification method includes specific detection , dynamic range,
ease of use , and reproducibility .
For ex. If the membrane receptor can produce 10 sec messenger and each second messenger can generate the transcription of 10 mRna chain then the signal has been amplified one thousand fold.