Which of the following conditions are not true across resting membrane?

(1) Axoplasm has more number of Potassium ions

(2) Axoplasm has less number of sodium ions

(3) High Concentration of negatively charged proteins in fluid outside axoplasm

(4) Both B and C

Subtopic:  Origin of Resting Membrane Potential |
 74%
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Ionic gradients across the resting membrane are maintained by

(1) Active transport of ions

(2) RMP

(3) Impulse or stimulus

(4) Both A and B

Subtopic:  Origin of Resting Membrane Potential |
 53%
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Sodium potassium pump in neuronal membranes is

(1) Responsible for transfer of 3 sodium outwards and two potassium inwards

(2) Responsible for 2 sodium outwards and three potassium inwards

(3) Responsible for 2 sodium and three potassium inwards

(4) Responsible for 2 sodium and three potassium outwards

Subtopic:  Action Potential |
 90%
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At Resting condition, the neuron membrane is

(1) Negative from outside

(2) Negative from inside

(3) Positive from inside

(4) Both A and C

Subtopic:  Origin of Resting Membrane Potential |
 79%
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The………. difference across the resting membrane is called as Resting potential.

(1) Electrochemical potential

(2) Electrical potential

(3) Chemical

(4) Chemiosmotic

Subtopic:  Origin of Resting Membrane Potential |
 73%
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When a stimulus is applied at a site over neuron membrane

(1) It becomes freely permeable to Sodium ions

(2) It becomes freely permeable to potassium ions

(3) It causes reversal of polarity from positive to negative on inner side

(4) Both A and C

Subtopic:  Origin of Resting Membrane Potential |
 54%
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The polarity of the membrane at site A is reversed ie inside of the membrane becomes changed from negative to positive

1. Called as depolarization

2. Called as repolarization

3. Called as polarization

4. Called as hyperpolarization

Subtopic:  Origin of Resting Membrane Potential |
 85%
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The ................ across the plasma membrane at site A is called ............, which is termed as ........

(1) Resting membrane potential, action potential, nerve impulse

(2) Electric potential difference, action potential, nerve impulse

(3) Resting membrane potential, nerve impulse, action potential

(4) Action potential, electric potential difference, active potential

Subtopic:  Origin of Resting Membrane Potential |
 62%
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In a neuron if stimulus is given at point A then in which direction current flows?

(1) From site A to site B on innerside

(2) From site A to site B on outerside

(3) From site B to site A on outerside

(4) Both A and C

Subtopic:  Origin of Resting Membrane Potential |
 57%
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The rise in stimulus-induced permeability to
a. Potassium ions
b. Sodium ions
c. Restoring RMP
d. Diffusion of potassium ions

Arrange them in order.

1. b-a-c-d

2. a-b-c-d

3. b-a-d-c

4. c-a-d-b

Subtopic:  Origin of Resting Membrane Potential |
 62%
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