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Reflex arc — pathway and speed

GCSE · Biology · OCR · B3 — Organism-level systems — nervous system, hormones, homeostasis (blood glucose, water balance, temperature)

Question

OCR J257/01 — Short answer

A student touches a very hot surface and quickly pulls their hand away before feeling pain.

(a) Put the following components of the reflex arc in the correct order: [2 marks] effector, motor neurone, receptor, relay neurone, sensory neurone

(b) Explain why the student's hand moved away before they felt the pain. [3 marks]

(c) Suggest why reflexes that bypass the brain are an advantage to survival. [2 marks]

7 marks · take your time before peeking.

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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.