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.
Frequently asked questions
What is the correct answer to this question?
Because a chemical message is necessary to cross the synapse
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
