How would a chemical that prevents the opening of ...

[newyorker26]

How would a chemical that prevents the opening of voltage-regulated Na+ channels affect the function of a neuron?
 A) The neuron will only be able to hyperpolarize.
  B) The neuron will depolarize more rapidly.
  C) Action potentials will lack a repolarization phase.
  D) The neuron will automatically and repeatedly produce graded potentials.
  E) The neuron will only be capable of producing graded potentials.

Question 2

During repolarization of a neuron
 A) sodium ions move out of the cell.
  B) potassium ions move out of the cell.
  C) potassium ions move into the cell.
  D) both sodium and potassium ions move into the cell.
  E) sodium ions move into the cell.

[Kedrick2014]

Answer to Question 1

E

Answer to Question 2

B

[newyorker26]

Excellent

[ecabral0]

Gracias!