In the proximal tubule of the kidneys, the active transport of this element drives the reuptake of water from blood filtrate.
In C4 plants, this element stimulates the regeneration of phosphoenolpyruvate, while the batrachotoxins raise the cell membrane's permeability to this element. The retention of this element is elevated in Conn's syndrome. In the proximal tubule of the kidneys, the active transport of this element drives the reuptake of water from blood filtrate. A transmembrane ATPase transports three ions of this element out of the cell for every two of another element to maintain a neuron's resting potential. That ion pump exchanges this element's ions with potassium. For 10 points, name this alkali metal whose positive ion is commonly ingested in table salt, with chemical symbol Na.
In C4 plants, this element stimulates the regeneration of phosphoenolpyruvate, while the batrachotoxins raise the cell membrane's permeability to this element.
sodium