Signaling -

The receptor triggers a relay of intracellular molecules, often called a signaling cascade (e.g., using G-proteins or kinases).

A signaling molecule (ligand) binds to a specific receptor on the cell surface or inside the cell. signaling

Common transducers include G-protein coupled receptors (GPCRs) , which use secondary messengers like cyclic AMP (cAMP) to amplify signals. 2. Signaling Theory (Economics & Management) Signaling Theory: A Review and Assessment - Sage Journals The receptor triggers a relay of intracellular molecules,

Signaling between cells in physical contact. Types of Signaling: Autocrine: A cell targets itself

The signal finally triggers a specific cellular activity, such as gene expression or enzyme activation. Types of Signaling: Autocrine: A cell targets itself.

Nearby cells are targeted (e.g., neurotransmitters).

Cell signaling is the complex process by which cells perceive and respond to their environment. It is essential for homeostasis, growth, and immune responses.