Parkinson's disease is caused by a lack of specific neurotransmitters. The graph shows the effect of age on the number of dopamine-producing cells in people who develop Parkinson's disease. In people without Parkinson's disease, the number of dopamine-producing cells rarely falls below 350000 . Explain why the symptoms of Parkinson's disease increase with age. Use the graph to support your answer. (4) ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................
Exam No：WBI1501-que-20241024 Year：2024 Question No：4(a)
Answer:
An explanation that includes four of the following points:
- with (increasing) age the number of dopamine producing cells decreases (1)
- after \(\{44 / 45\}\) years the number of dopamine producing cells fall below \{normal / people without Parkinson's / 350 000\} (1)
- \{less / fewer\} \{neurotransmitters / dopamine\} \{release / produced\} (1)
- therefore \{fewer / no \} \{(electrical) impulses / action potential / nerve impulses\} (1)
- causing \{reduced / no / disruption to \} \{muscle contraction / responses\} (1)
- with (increasing) age the number of dopamine producing cells decreases (1)
- after \(\{44 / 45\}\) years the number of dopamine producing cells fall below \{normal / people without Parkinson's / 350 000\} (1)
- \{less / fewer\} \{neurotransmitters / dopamine\} \{release / produced\} (1)
- therefore \{fewer / no \} \{(electrical) impulses / action potential / nerve impulses\} (1)
- causing \{reduced / no / disruption to \} \{muscle contraction / responses\} (1)
Knowledge points:
CH8 – Coordination, Response and Gene Technology
Solution:
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