If a typical plant cell has a higher concentration of nitrate (NO_3^-) inside th

Question

If a typical plant cell has a higher concentration of nitrate (NO_3^-) inside the cell than outside the cell, it is most likely that The cell reversed its membrane potential from positive to negative The cell reversed its membrane potential from negative to positive The anion entered the cell passively through a channel NO_3^- is a byproduct of metabolism Energy was expended to accumulate the anion The proton motif force is The electrochemical potential of water The pH gradient across a membrane The chemical potential of water The membrane potential The electrochemical potential of hydrogen ions

Explanation / Answer

The proton motive force is the electrochemical potential of Hydrogen ions. Diffusion and electrostatic force together are expressed as Electrochemical Gradient. It is said that proton motive force is derived from the electrochemical gradient. The electrical gradient is caused when the charge separates across the membrane. So when the hydrogen ions move across the membrane the electrochemical potential is generated.

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