In the Salamander,the Sour Taste Receptor Cells Function by Having

Multiple Choice

In the salamander,the sour taste receptor cells function by having an apically localized K⁺ channel that is blocked by protons.When protons are applied,what happens to the membrane potential and why?

A) Receptor depolarization because K⁺ permeability,which normally maintains a hyperpolarized resting state,is reduced.
B) Receptor hyperpolarization because H⁺ ions move into the cell and render it more positively charged.
C) Receptor hyperpolarization because the H⁺ ions outside the cell make the inside of the cell more negatively charged.
D) Nothing will happen until the G protein is activated.