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3.1 Coordination and control – the nervous system

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Question 6
F

Neurones are not joined directly to each other. There is a very small gap between two neurones. This junction is called a synapse.

a.

Describe how an impulse passes across a synapse.

[3]
b.

A drug blocks the receptors on the second neurone at a synapse.

Suggest the effect of this drug.

[2]
c.

Explain why impulses can only pass across a synapse in one direction.

[2]
Markscheme

3.1 Coordination and control – the nervous system Questions

  1. GCSE
  2. /Biology
  3. /3.1 Coordination and control – the nervous system

135 exam-style questions on OCR GCSE Biology 3.1 Coordination and control – the nervous system, covering 3.1.1 Structure of the nervous system, 3.1.2 Coordinated response, 3.1.3 The reflex arc, 3.1.4 Structure of the eye, 3.1.5 Defects of the eye, 3.1.6 Structure and function of the brain, 3.1.7 Difficulties of investigating brain function, and 3.1.8 Limitations in treating nervous system damage. Each one has a worked solution and a mark scheme showing where the marks go.

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