Biology, 11.03.2020 23:21 mmassaro19
Select the six statements that accurately describe signal transduction pathways. A ligand, such as a hormone, binds to a specific cell surface receptor on a target cell. A receptor may pass on a signal by interacting with another protein or by acting as an enzyme. Phosphatases remove phosphoryl groups from polypeptides, regulating a cell's response. A receptor changes conformation upon binding, transmitting a signal across the cell membrane. Signal transduction cascades directly transmit a single stimulus to a single target. Signal transduction cascades, often involving protein kinases, amplify a signal intracellularly. A ligand phosphorylates protein residues, ending the signaling cascade inside the cell. A second messenger may carry a signal from the cell membrane to an organelle. A second messenger carries a signal from a tissue or organ to a target cell.
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Select the six statements that accurately describe signal transduction pathways. A ligand, such as a...
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