Neco 2025 Biology Question 9
Practice objective / multiple choice question 9 from the 2025 Neco Biology examination.
In a simple spinal reflex, the sensory neuron conducts an impulse over a distance of 0.5 m to the spinal cord at a speed of 50 m s\(^{-1}\). The synaptic delay at the spinal cord is 0.5 ms. The motor neuron then conducts the impulse over 0.4 m to the effector muscle at a speed of 60 m s\(^{-1}\). Calculate the total time (in milliseconds) from the initial stimulus to the onset of muscle contraction. Give your answer to two decimal places.
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About This Question
This is Neco 2025 Biology Question 9. It is one of the objective questions from the 2025 Neco Biology examination.
Difficulty level: Medium .
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