When a neuron is at rest, what is its electrical charge? a) ...

[tth]

When a neuron is at rest, what is its electrical charge?
 
  a) -80 millivolts
  b) +70 millivolts
  c) -70 millivolts
  d) +50 millivolts
  e) -60 millivolts

Question 2

The sodium-potassium pump
 
  a) exchanges three Na+ ions inside the cell for two K+ ions that are outside the cell.
  b) exchanges three K+ ions inside the cell for two Na+ ions that are outside the cell.
  c) exchanges two Na+ ions inside the cell for three K+ ions that are outside the cell.
  d) exchanges two K+ ions inside the cell for every three Na+ ions that are outside the cell.
  e) exchanges two K+ ions inside the cell for every two Na+ ions that are outside the cell.

[fauacakatahaias]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: A