title: Derivation of equations for the steady-state reaction velocity of a substance based on the use of a second substance.
abstract: To study the transport and/or transformation of a particular molecular species, a second substance, which need not be chemically identical to that species, can be employed. Equations are derived for the steady-state velocity of the molecular species that use values found by use of the second substance.
mesh_terms: D001692:Biological Transport; D001921:Brain / Q000378:metabolism*; D003837:Deoxy Sugars / Q000378:metabolism*; D003847:Deoxyglucose / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D008433:Mathematics; D008954:Models, Biological
chemical_list: D003837:Deoxy Sugars; D003847:Deoxyglucose; D005947:Glucose