No, they definitely do not. Organic cellular communication occurs by way of the transmission of receptor-mediated signaling between and within cells. Signaling cells produce ligands, small, usually volatile molecules that interact with receptors, which are proteins. Once a ligand binds to its receptor, the signal is transmitted through the membrane into the cytoplasm. Signal transduction is the continuation of a signal across surfaces of receptor cells. Within the cell, receptors are able to interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the receptor’s intracellular domain.

And that’s just the tip of the iceberg. And I left out synaptic signaling in your brain, which beyond things like information retrieval and synthesis also corresponds to more complex events such as your emotions, affective states and phenomena such as intuition, empathy, altruism, etc.