How do cells communicate with each other? Provide an example of cell-to-cell communication.

Cells communicate through various mechanisms, including direct contact (e.g., gap junctions in animals, plasmodesmata in plants), local signaling (e.g., paracrine signaling, synaptic signaling), and long-distance signaling (e.g., endocrine signaling via hormones). An example of cell-to-cell communication is synaptic signaling, where a neuron releases neurotransmitters into a synapse to transmit a signal to another neuron or a target cell.