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Intracellular receptors
Intracellular receptors are located within the cytoplasm or nucleus and interact with signalling molecules that can cross the plasma membrane.
Receptor
A receptor is a protein that detects and responds to specific signals. They bind to signalling molecules(ligands) to initiate a cellular response.
Transmembrane receptors
Transmembrane receptors are embedded in the plasma membrane and interact with signalling molecules that cannot cross the membrane.