Igcse Model Questions Vol1 2024 Biology Question 3
Practice objective / multiple choice question 3 from the 2024 Igcse Model Questions Vol1 Biology examination.
The nerve impulse that triggers a withdrawal reflex travels at a speed of \(60\ \text{m s}^{-1}\) over a distance of \(1.2\ \text{m}\) from the spinal cord to the foot muscle. The pathway includes two synapses, each introducing a delay of \(0.5\ \text{ms}\). After the impulse reaches the muscle, the muscle takes \(30\ \text{ms}\) to contract. Determine the total time from the initial stimulus to the start of muscle contraction, expressed in milliseconds.
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This is Igcse Model Questions Vol1 2024 Biology Question 3. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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