Q. No.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
(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
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
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 |
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
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
Nerve impulse is transmitted from one neuron to another neuron by the means of
1. Synapse
2. Junction
3. Both 1 and 2
4. Current only
Which of the following has not to be there in a synapse?
(1) Pre synaptic neuron
(2) Post synaptic neuron
(3) Synaptic cleft
(4) None of these
Which of the following is not associated with electrical synapse?
(1) No synaptic cleft
(2) Pre synaptic membranes and post synaptic membranes are in close association with each other
(3) Electric current flow directly from one neuron to other neuron through synapse
(4) Very common synapse in our system
Transmission of an impulse across electrical synapses
(1) Is very different to impulse conduction along a single axon
(2) Is very similar to impulse conduction along a single axon
(3) Is same as that of chemical synapse
(4) Both A and C
Which of the following is not associated with Impulse transmission across an electrical synapse?
(1) Faster than chemical synapse
(2) Rare in our system
(3) No synaptic cleft
(4) Impulse transmission is not similar as that of transmission within a neuron
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