BSCI 1001 Study Guide - Quiz Guide: Receptor Tyrosine Kinase, Protein Kinase, Cell Signaling
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Identify and describe the three stages of cell signaling: the first stage is reception, followed by transduction, and ending with response. Reception occurs when the signaling molecule binds to the receptor protein and a chemical signal is detected. Transduction is what converts the signal to a form that can bring about a certain response and typically involves a sequence of changes(relay molecules. ) Response is when the specific cellular response is finally triggered: discuss what determines whether a cell is a target cell for a particular signal molecule: The target cells have specific receptor proteins that allow the cell to hear the signal and respond to it. They also tend to be too large to travel through membranes. In active transport, cells move across the membrane against the concentration gradient. In active transport, cells must move against the resistance, just as signals would have to move against the resistance since they cannot easily pass through the cell membrane.