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According to Kuhn, the scientists who turn out to be right are those whose theories best explain the available data.
Enzyme-linked Receptors
A class of cell surface receptors that initiate a cellular response upon binding a specific ligand, often leading to a series of enzymatic reactions inside the cell.
Ion Channel-linked Receptors
Proteins that span a cell membrane and open to allow ions such as Na+, K+, Ca2+, and Cl- to pass in response to the binding of a chemical messenger.
G Protein-linked Receptors
Proteins that transmit signals from outside the cell to the inside by binding with G proteins, initiating various cellular processes.
Second Messenger
Intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules.
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