Which of the following is not associated with chemical synapse?

Which of the following has not to be there in a synapse?

Which of the following is not associated with Impulse transmission across an electrical synapse?

Receptor sites for neurotransmitters are located on the:

1. tips of axons

2. axon membranes in the regions of the nodes of Ranvier

3. postsynaptic membrane

4. presynaptic membrane

Which of the following is not associated with electrical synapse?

Synaptic cleft is not

Five events in the transmission of nerve impulse across the synapse are given–

A. Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post synaptic neuron.

B. Neurotransmitter binds to the receptor on post synaptic membrane

C. Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter releases into synaptic cleft

D. Depolarization of pre-synaptic membrane

E. Arrival of action potential at axon terminal.

In which sequence do these events occur?

$1. \mathrm{E} \to \mathrm{D} \to \mathrm{C} \to \mathrm{B} \to \mathrm{A}$
$2. \mathrm{A} \to \mathrm{B} \to \mathrm{C} \to \mathrm{D} \to \mathrm{E}$
$3. \mathrm{A} \to \mathrm{B} \to \mathrm{D} \to \mathrm{C} \to \mathrm{E}$
$4. \mathrm{E} \to \mathrm{D} \to \mathrm{C} \to \mathrm{A} \to \mathrm{B}$

A diagram showing the axon terminal and synapse is given. Identify correctly at least two of A-D:

1. B- Synaptic connection; D- K⁺

2. A- Neurotransmitter; B- Synaptic cleft

3. C- Neurotransmitter; D- Ca⁺⁺

4. A- Receptor; C- Synaptic vesicles

Mark the correct statement:

In chemical synapse, postsynaptic membrane receptor
binds with
1. Excitatory neurotransmitter.
2. Inhibitory neurotransmitter.
3. Ca⁺⁺ ions.
4. Both 1 and 2