Question 1
Triple only (what this means)
Triple only: only in Triple Biology. Combined Science students can skip it. What the labels meanWhich part of the brain controls heart rate and breathing rate?
- Cerebellum
- Cerebral hemispheres
- Medulla oblongata
- Retina
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Answer: C (1)
Question 2
Triple only (what this means)
Triple only: only in Triple Biology. Combined Science students can skip it. What the labels meanState one function of each of the cerebral hemispheres, the cerebellum and the medulla oblongata.
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- cerebral hemispheres: any one of consciousness, intelligence, memory, language (1)
- cerebellum: coordinates movement / helps to control balance (1)
- medulla oblongata: controls unconscious activities such as heart rate and breathing rate (1)
Question 3
Triple only (what this means)
Triple only: only in Triple Biology. Combined Science students can skip it. What the labels meanHigher tier (what this means)
Higher tier: only on the Higher tier papers. Foundation students can skip it. What the labels meanExplain how CT scans and PET scans help doctors to investigate the brain.
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- brain tissue is difficult to access / is inside the skull (1)
- CT scans show the structure of the brain / damage or tumours (1)
- PET scans show function / which areas of the brain are active (1)
- without surgery (1)
- Max 3
Question 4
Triple only (what this means)
Triple only: only in Triple Biology. Combined Science students can skip it. What the labels meanHigher tier (what this means)
Higher tier: only on the Higher tier papers. Foundation students can skip it. What the labels meanExplain why it is difficult to treat a spinal injury and a brain tumour.
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- neurones in the spinal cord / CNS do not easily repair themselves (1)
- impulses cannot pass the damaged region, so paralysis or loss of feeling can be permanent (1)
- surgery to remove a tumour can damage healthy brain tissue / the tumour may be in a place that cannot be reached safely (1)