You searched for: “ion pump
ion pump
1. A vacuum pump that removes gas by ionizing the atoms or molecules and adsorbing them on a metal surface.
2. A vacuum pump in which gas molecules are first ionized by electrons that have been generated by a high voltage and are spiraling in a high-intensity magnetic field, and the molecules are then attracted to a cathode, or propelled by electrodes into an auxiliary pump or an ion trap.
3. A pump that ionizes gas molecules wilth high-energy electrons in a high-intensity magnetic field and then deposits them onto a cathode or ejects them into an auxiliary pump or ion trap.
4. In medicine, a complex of proteins located in the cell membrane that is responsible for actively transporting ions across the membrane against a concentration gradient using energy rich ATP (adenosine triphosphate) molecules. Functions in maintaining osmotic balance in cells and in the conduction of nerve impulses.

Adenosine triphosphate (ATP) refers to a nucleotide present in all living cells which serves as an energy source for many metabolic processes and is required for ribonucleic acid synthesis.

This entry is located in the following unit: ion, ion- + (page 3)