The concentration one of the following ion is tenfold higher on the outside of the membrane than inside:

Related Mcqs:

1. One of the following ions is twenty times more concentrated inside than outside the membrane surface:

   A. Sodium
   B. Potassium
   C. Organic ions
   D. None of these

2. The major factors involved in changing resting membrane potential to active membrane potential include:

   A. Na+ and K+ ion movement
   B. Membrane potential
   C. Reversal of charges
   D. All of the above

3. The potential during which the inner membrane surface becomes more positive than the outside is called:

   A. Resting membrane potential
   B. Threshold stimulus
   C. Active membrane potential
   D. None of these

4. The passage of nerve impulse is associated with increase in permeability of which of the following ion:

   A. Sodium
   B. Potassium
   C. Organic ions
   D. Inorganic ions

5. One of the followings increases blood glucose level and regulates mineral ion balance:

   A. Cortisol
   B. Corticosterine
   C. Aldosterone
   D. Both a & b

6. A membrane potential of_________volts exits when a neuron is not conducting a nerve impulse:

   A. 0.05
   B. 0.07
   C. 0.05 to 0.07
   D. 1

7. Active membrane potential is:

   A. 0.05 volts
   B. -50 mv
   C. 0.07 volts
   D. both a & b

8. The electrical potential that exists across a cell membrane is known as:

   A. Membrane potential
   B. Electrical potential
   C. Resting potential
   D. Action potential

9. The major factors that are involved in resting membrane potential include:

   A. Sodium and potassium ions
   B. Negative organic ion
   C. Leakage of K+ions from neurons
   D. All of the above

10. A wave of electrochemical changes, which travels along the length of the neuron involving chemical reactions and movement of ions across the cell membrane, is:

    A. Membrane potential
    B. Resting membrane potential
    C. Nerve impulse
    D. Electron pump