NEET Zoology Synaptic Transmission Assertion Reason Question
Assertion (A): Ion channels on the post-synaptic membrane open upon neurotransmitter binding.
Reason (R): The opening of ion channels always leads to an excitatory potential in the post-synaptic neuron.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
The NCERT context explains that neurotransmitter binding opens ion channels in the post-synaptic membrane, which can generate either an excitatory or inhibitory potential, not always excitatory.
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