Assertion :Transmission of nerve impulse across a synapse is accomplished by neurotransmitters. Reason: Transmission across a synapse usually requires neurotransmitters, because there is a small space, i.e., synaptic cleft, that separates one neuron from another.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Till the nerve ending the impulse travels in the form of a depolarisation wave but when the synapse comes the depolarisation wave cannot cross the synapse because there is some empty space the wave cannot travel across. In this situation, neurotransmitters are secreted which have receptors on the next nerve. These neurotransmitters regenerate a depolarization wave in the next neuron which carried the impulse forward.
The correct answer is 'both assertion and reason are correct and the reason is the correct explanation for assertion'.

Suggest Corrections

Similar questions

Q. Assertion: Impulse transmission across an electrical synapse is always faster than that across a chemical synapse.
Reason: The synaptic cleft in electrical synapsis is only 0.2 nm

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Assertion

Lithium sulphate does not form alums.

Reason

$L i^{+}$ is too small to form a stable lattice required for double-salt/alum formation.

Join BYJU'S Learning Program