Which example involves a cell memebrane receiving and sending messages?

An example of a cell membrane receiving and sending messages is the process of neurotransmission in neurons. When a neurotransmitter is released from one neuron, it binds to receptors on the cell membrane of another neuron, initiating a signal. This binding triggers a series of biochemical events, leading to the transmission of the signal along the neuron. The cell membrane thus plays a critical role in both receiving incoming signals and transmitting outgoing messages through action potentials.