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3.1 Coordination and control – the nervous system

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Question 19
H

A person has long-sightedness. In their eye, light from a near object is brought to a focus behind the retina.

a.

Explain why this person can see distant objects clearly but cannot see near objects clearly.

[3]
b.

Name the type of lens used in glasses to correct long-sightedness, and explain how it corrects the defect.

[2]
c.

Laser surgery can also be used to correct long-sightedness. The laser changes the shape of the cornea.

Suggest one advantage and one disadvantage of laser surgery compared with wearing glasses.

[2]
d.

Explain why changing the shape of the cornea can correct long-sightedness.

[1]
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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