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DictionarySeeelectrochemicalelectrochemical gradient
electrochemical gradient[i‚lek·trō‚kem·i·kəl ′grād·ē·ənt] (cell and molecular biology) The combined effect of a solute's concentration gradient across a membrane and the electric charge gradient across the membrane (the membrane potential), which drives the solute to cross the membrane. electrochemical gradient
gradient [gra´de-ent] rate of increase or decrease of a variable value, or its representative curve.edge gradient in radiology, the penumbra or partial shadow on a radiograph caused by the three-dimensional shape of an object.electrochemical gradient the difference in ion concentration" >concentration and electrical potential" >potential from one point to another, so that ions tend to move passively along it. e·lec·tro·chem·i·cal gra·di·enta measure of the tendency of an ion to move passively from one point to another, taking into consideration the differences in its concentration and in the electrical potentials between the two points; commonly expressed as the additional voltage needed to achieve equilibrium.electrochemical gradient a trans MEMBRANE gradient formed as a result of the movement of an ION or other SOLUTE across the membrane. This comprises a gradient of electrical charge and a concentration gradient, which depends on the distribution of the ion across the membrane. Such a gradient can be generated by the operation of an ELECTRON TRANSPORT SYSTEM, in the form of a proton motive force (pmf).FinancialSeeGradientThesaurusSeegradient |