Localization of Hydrogen Ion and Chloride Ion Fluxes in Nitella

Localization of Hydrogen Ion and Chloride Ion Fluxes in Nitella

Alternating bands of acid and base formation have been detected along the length of the internodal cell of Nitella clavata when it is illuminated, while in the dark this phenomenon is minimal. Chloride influx occurs only or largely in the acid-extruding regions, and this is also a light-dependent ion movement. Chloride efflux is slightly dependent on illumination and is not localized as are H(+...

The Influence of H+ on the Membrane Potential and Ion Fluxes of Nitella

The resting membrane potential of the Nitella cell is relatively insensitive to [K](o), but behaves like a hydrogen electrode. K(+) and Cl(-) effluxes from the cell were measured continuously, while the membrane potential was changed either by means of a negative feedback circuit or by external pH changes. The experiments indicate that P(K) and P(Cl) are independent of pH but are a function of ...

The Relation of the Membrane Potential and Resistance of Nitella to Ion Fluxes

Effect of electric current on gastric hydrogen ion and chloride ion secretion.

Using the chambered gastric segment preparation it was found that application of current from serosa to mucosa resulted in an increase in H+ ion production and a decrease in Clion secretion. Following the application of current from serosa to mucosa the secretory rate was essentially the same as before current application. Application of current from mucosa to serosa resulted in a decrease in H...

Ion escape fluxes from Mars

[1] A 3D, multi-species, non-ideal MHD numerical code was used to calculate the ion escape fluxes from Mars. The calculations were carried out for six cases with different nominal solar wind, solar cycle and crustal field orientation conditions and the total escape fluxes (the sum of the three major ionospheric species, O, O2 , and CO2 ) varied by about an order of magnitude from 2.7 10 to 2.4 ...