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2.3 The nervous system and brain

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Question 32
F

A student describes a withdrawal reflex.

Statement P: a receptor detects a change in the environment.

Statement Q: an effector carries an impulse to the spinal cord.

Statement R: a relay neurone passes an impulse between neurones in the spinal cord.

Which statements are correct?

[1]
A

P and Q only

B

P, Q and R

C

P and R only

D

Q and R only

Markscheme

2.3 The nervous system and brain Questions

  1. GCSE
  2. /Biology
  3. /2.3 The nervous system and brain

111 exam-style questions on Edexcel GCSE Biology 2.3 The nervous system and brain, covering 2.3.1 Structures and functions of the brain, 2.3.2 Imaging brain function with scanning, 2.3.3 Limitations in treating nervous system damage, 2.3.4 Neurones and impulse transmission, and 2.3.5 Structure and function of a reflex arc. Each one has a worked solution and a mark scheme showing where the marks go.

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