1 (a) Pathogens cause disease - Edexcel - GCSE Biology: Combined Science - Question 1 - 2018 - Paper 1
Question 1
1 (a) Pathogens cause disease.
Draw one straight line from each type of pathogen to the disease that is caused by that pathogen.
type of pathogen
disease
fungus
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Worked Solution & Example Answer:1 (a) Pathogens cause disease - Edexcel - GCSE Biology: Combined Science - Question 1 - 2018 - Paper 1
Step 1
Pathogen: fungus
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Answer
The disease caused by fungi is Chalara ash dieback.
Step 2
Pathogen: virus
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The disease caused by viruses is AIDS.
Step 3
Explain why the data suggests that Patient Z has a bacterial infection.
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Patient Z has the highest number of white blood cells, at 12500 cells per μl, which is significantly above the normal range for healthy individuals (Usually between 4000-10000 cells per μl). An elevated white blood cell count often indicates an ongoing infection, and in this context, a higher count is particularly associated with bacterial infections.
Step 4
State two safety precautions that need to be taken when handling blood samples.
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Always wear gloves and goggles to protect against contamination.
Clean up spills immediately and use tongs or tools to handle samples safely.
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