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If a substance blocks chemical transmission at a synapse, why will a signal not form in the next neuron?

Answer and explanation

Correct answer: Because a chemical message is necessary to cross the synapse

At a synapse, the electrical impulse reaching the end of one neuron causes chemicals called neurotransmitters to be released. These chemicals diffuse across the synaptic gap and bind to receptors on the next neuron, initiating a new electrical signal. If their release or action is blocked, the gap cannot be crossed and the next neuron is not stimulated. Hence option A is correct; the other statements describe impossible or irrelevant events.

Related tags

SynapseNeurotransmittersNerve SignalControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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