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  • 1(current)
Q. No.

Chemicals involved in transmission of impulses at chemical synapses are called  A, they bind to their specific B present on the post synaptic membrane, Here ‘A’ and ‘B’ are

A B
1. Receptors Substrate
2. Enzymes Receptors
3. Biocatalysts  Active site
4. Neurotransmitters  Receptors
Subtopic:  Synapse |
 92%
Level 1: 80%+
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Which is correct?

1. Impulse transmission is always faster across an electrical synapse than across a chemical synapse
2. Impulse transmission is sometimes faster across an electrical synapse than across a chemical synapse
3. Impulse transmission is faster across chemical synapse than electrical synapse
4. Both synapses have equal impulse transmission speed
Subtopic:  Synapse |
 89%
Level 1: 80%+
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The unique characteristic of an electrical synapse, making it distinct from a chemical synapse, is that:
1. It requires neurotransmitters to transmit impulses between neurons.
2. It uses synaptic vesicles to transmit impulses between neurons.
3. It occurs predominantly in the autonomic neural system.
4. It allows direct current flow between neurons with only a virtual synaptic cleft, resulting in faster impulse transmission.
Subtopic:  Origin of Resting Membrane Potential | Action Potential | Synapse |
 88%
Level 1: 80%+
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In the following diagram showing axon terminal and synapse A, B, C, D and E respectively represents:

1. A-axon terminal, B-synaptic cleft, G-synaptic vesicles, D-neurotransmitters, E-receptors
2. A-axon terminal, B-synaptic vesicles, C-synaptic cleft, D-receptors, E-neurotransmitters
3. A-synaptic cleft, B-synaptic vesicles, C-axon terminal, D-neurotransmitters, E-receptors
4. A-synaptic cleft, B-axon terminal, C-synaptic vesicles, D-neurotransmitters, E-receptors

Subtopic:  Action Potential | Synapse |
 88%
Level 1: 80%+
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Select the incorrect statement regarding synapses:
1. Impulse Transmission across a chemical synapse is always faster than that across an electrical synapse.
2. The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.
3. Electrical current can flow directly from one neuron into the other across the electrical synapse.
4. Chemical synapses use neurotransmitters.
Subtopic:  Origin of Resting Membrane Potential | Synapse |
 89%
Level 1: 80%+
NEET - 2022
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A diagram showing axon terminal and synapse is given. Identify correctly A-D:
  

1. A Receptor C Synaptic vesicles
2. B Synaptic connection D K+
3. A Neurotransmitter B Synaptic cleft
4. C Neurotransmitter D Ca2+
Subtopic:  Action Potential | Synapse |
 85%
Level 1: 80%+
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Assertion (A): Electrical synapses are common in our nervous system.
Reason (R): Electrical synapses allow slower impulse transmission than chemical synapses.

1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Nervous System | Origin of Resting Membrane Potential | Action Potential | Synapse |
 83%
Level 1: 80%+
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