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Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events most commonly protein phosphorylation catalyzed by protein kinases which ultimately results in a cellular responseproteins responsible for detecting stimuli are generally termed receptors although in some cases the term sensor is useda cell is highly responsive to specific chemicals in its environment hormones are chemical signals that tell a cell to respond to a change in conditions molecules in food or aromas communicate taste and smell through their interaction with specialized sensory cells this chapter provides an overview of information metabolismhow cells receive process and respond to information from the ralph a bradshaw edward a dennis in handbook of cell signaling second edition 2010 cell signaling which is also often referred to as signal transduction or transmembrane signaling is the process by which cells communicate with their environment and respond temporally to external cues that they sense there all cells have the capacity to achieve this to some degree albeit with a wide signal transduction n the process by which a signal such as a hormone or a change in the concentration of an ion is converted into a biochemical response by means of the activation of a receptor on the surface or interior of a cell signal transduction biochemical conversion that is part of a process such as the docking of hormone to receptor signal transduction definition signal transduction is the process of transferring a signal throughout an organism especially across or through a cellsignal transduction relies on proteins known as receptors which wait for a chemical physical or electrical signalchemical signals are called ligands and can be produced by organisms to control their body or received from the environment

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