Relaying a message from a membrane receptor to a molecule that performs a specific function within a cell occurs when

There is a potential change in the channel gates

Explanation:

The transmission of information on from a membrane receptor to a molecule occurs by means of special gates called channel gates. These gates are special gates that regulate the entrance of the ions in the membrane. In addition, the receptor molecules ensure that the protons or hydrogen ions do not enter unregulated. Furthermore, the sodium gates are responsible for the regulation of the molecule. Thus, the membrane movement is controlled.