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NEET UG BIOLOGY MCQ: NEURAL CONTROL AND COORDINATION
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Which of the following is correct in case of chemical synapses?
I. The membranes of the pre and postsynaptic neurons are separated by a gap called synaptic cleft
II. Chemicals called neurotransmitters are involved in the transmission of impulses
III. Impulse transmission in chemical synapse is faster than that across an electrical synapse
IV. Chemical synapses are rare in our system
I. The membranes of the pre and postsynaptic neurons are separated by a gap called synaptic cleft
II. Chemicals called neurotransmitters are involved in the transmission of impulses
III. Impulse transmission in chemical synapse is faster than that across an electrical synapse
IV. Chemical synapses are rare in our system
View answer and explanation
Correct option: C
I and II
Option C (I and II) is correct because chemical synapses involve a synaptic cleft and neurotransmitters for impulse transmission.
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II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
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