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

Related Mcqs:

1. For every two K+ ions transported inward a neutron cell., how many Na+ ions are transported outside:

   A. One
   B. Two
   C. Three
   D. Twenty

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

   A. Sodium
   B. Potassium
   C. Organic ions
   D. All of these

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. 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

5. 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

6. Which of the following conserves the level of Na+ ions in the body by presenting their loss from Kidney tubules?

   A. Cortisol
   B. Conticosterne
   C. Aldosterone
   D. Adrenaline

7. Currently a large proportion of the Pakistani populations overweight. Dr. Laeeq thinks that, in part, this may be due to an innate preference for foods that are rich in fats and suggested that in times Laeeq has suggested that in times when foods were not so readily available, this innate preference would ensure enough calories for energy and ensure enough calories for energy and survival Dr. Laeeq’s views are most consistent with those of the

   A. evolutionary perspective in psychology
   B. behavioral perspective in psychology
   C. biological perspective in psychology
   D. cognitive perspective in psychology

8. Active membrane potential is:

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

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. When a neuron is stimulated, the cell membrane at the point of stimulation undergoes momentary reversal in change called:

    A. Action potential
    B. Resting potential
    C. Threshold potential
    D. None of these