cellular signal is a sink of matter for room inactivity
cellular_communication is not mass_chemical_reaction. denaturation is not impairing. cell_signaling is not chemical_interaction. inorganic_substance is inanimate_object. cell_signaling is chemical_interaction. binding_site_activation is chemical_interaction. electric_network is inanimate_object. binding_site_activation is not chemical_interaction. gas is inanimate_object. denaturation is impairing.