Prepare for NEET Biology Neural Control And Coordination with MCQs & PYQs on NEET.GUIDE. Enjoy free practice, previous year questions, and expert guidance on neurons and synapses.
The resting membrane potential of a neuron is primarily maintained by the activity of which membrane proteins?
Voltage-gated sodium channels
Voltage-gated potassium channels
Sodium-potassium pumps
Ligand-gated chloride channels
Which factor does NOT contribute significantly to the establishment and maintenance of the resting membrane potential?
Sodium-potassium pump
Leak potassium channels
Negatively charged intracellular proteins
Voltage-gated calcium channels
Which factor does NOT directly contribute to the resting membrane potential of a neuron?
Sodium-potassium pump
Leak potassium channels
Intracellular protein anions
Voltage-gated calcium channels
During the resting state of a neuron, the concentration of which ion is highest inside the cell?
Na+
K+
Cl-
Ca2+
What is the approximate resting membrane potential of a neuron?
+70 mV
-70 mV
0 mV
+30 mV
The resting membrane potential of a neuron is primarily maintained by the:
Sodium-potassium pump
Calcium channels
Leakage of chloride ions
Voltage-gated sodium channels
In a resting neuron, the axonal membrane is more permeable for which of the following ions?
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive
into the cell
and out of the cell
into the cell
out of the cell
In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive
into the cell
and out of the cell
into the cell
out of the cell
A neuron is said to be in resting state when,
I. it is not conducting any impulse
II. plasma membrane is electrically positive outside and negative inside
III. the nerve fibre is stimulated mechanically or electrically
IV. plasma membrane is negative outside and positive inside
The correct option is
III and IV
I and IV
II and III
I and II
