If a drug blocks chemical message at a synapse, what effect will it have on nervous coordination?
Answer and explanation
Correct answer: Transfer of the message to the next neuron will be disturbed
The governing concept is synaptic transmission. When an electrical impulse reaches the end of one neuron, chemicals called neurotransmitters cross the synaptic gap and stimulate the next neuron. If a drug blocks their release or action, the signal cannot pass normally, so the response may be delayed, weakened, or stopped. Therefore option A is correct. Options B, C, and D do not describe the specific effect of blocking a synapse.
Frequently asked questions
What is the correct answer to this question?
Transfer of the message to the next neuron will be disturbed
Why is this the correct answer?
The governing concept is synaptic transmission. When an electrical impulse reaches the end of one neuron, chemicals called neurotransmitters cross the synaptic gap and stimulate the next neuron. If a drug blocks their release or action, the signal cannot pass normally, so the response may be delayed, weakened, or stopped. Therefore option A is correct. Options B, C, and D do not describe the specific effect of blocking a synapse.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Nervous system.
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