Question
Explain the process of signalling mediated by cell surface receptors.
Answer :
Word Count : 264
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Cell surface receptors are specialized proteins located on the plasma membrane that detect and respond to extracellular signals, such as hormones, neurotransmitters, or growth factors. These receptors play a crucial role in translating external cues into intracellular responses, a process known as signal transduction. When a signaling molecule, or ligand, binds to a cell surface receptor, it induces a conformational change in the receptor structure. This change activates the receptor and triggers downstream signaling pathways inside the cell. There are several major types of cell surface receptors, including G-protein coupled receptors (GPCRs), receptor tyrosine kinases
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