49) State the first step of signaling within the receiving cell that results from binding of a ligand to a G protein-coupled receptors: ligand-gated ion channels: receptor tyrosine kinases: 50) Complex, multi-step signal transduction pathways have some advantages State one of these advantages and explain the manner in which phosphorylation (kinase) cascades can be used to provide this advantage: 51) Complex, multi-step signal transduction pathways have some disadvantages State one of these disadvantages and provide property of second messengers that allows them to minimize this disadvantage when they are used in these pathways
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** - Ligand-gated ion channels: **Opening of the ion channel upon ligand binding, allowing ions to flow across the membrane.** - Receptor tyrosine kinases: **Dimerization and autophosphorylation of the receptor upon ligand binding.** Show more…
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