Daily Practice · GCSE Science

Daily Practice - GCSE Science

24th April 1999

5 questions · GCSE · 584 questions in this band

1
The Circulatory System and Heart
Why is the wall of the left ventricle thicker than that of the right ventricle?
2
Plant Tissues, Transport and Transpiration
Why are xylem cells strengthened with lignin?
3
Infection and Response
A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
4
Communicable Diseases and Pathogens
How do bacteria make a person feel ill?
5
Human Defences, Vaccination and Drug Development
Why does a vaccinated person not usually become ill when they meet the pathogen?

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