Answer:
The sodium-potassium pump and the proton pump are both considered to be electrogenic because they generate an electric potential difference between both sides of the membrane. By exporting/importing unequal number of charges the cell is able to maintain this electric potential difference.
Step-by-step explanation:
In the case of the sodium-potassium pump in the plasmatic membrane of the animal cell, three sodium ions are exported outside whereas only two potassium are imported. This way, the cell is able to maintain high concentrations of sodium in the outside and high concentration of potassium inside.
On the other hand, the proton pump located in the membrane of vegetal cells, exports protons, but does not import any other ion. That is how vegetal cells maintain the electric potential difference.