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Receptory are specialized molecules, typically proteins, found within or on the surface of cells that are responsible for detecting and responding to specific stimuli. These stimuli can be chemical signals such as hormones, neurotransmitters, or antigens, or physical signals like light, pressure, or temperature. When a specific stimulus, known as a ligand, binds to its corresponding receptor, it triggers a cellular response. This interaction is highly specific, often described as a lock-and-key mechanism, where only the correct ligand can effectively bind to and activate a particular receptor.
The binding of a ligand to a receptor initiates a cascade of events within the cell. This
Receptors play crucial roles in virtually all biological processes, from sensory perception and immune responses to