Daily Practice

GCSE Science

28th October 1990

5 questions · GCSE · 584 questions in this band

1
Organisation
Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
2
The Digestive System and Enzymes
Where is bile made and where is it stored?
3
The Circulatory System and Heart
Why is the wall of the left ventricle thicker than that of the right ventricle?
4
Plant Tissues, Transport and Transpiration
Why are xylem cells strengthened with lignin?
5
Infection and Response
Which type of pathogen causes athlete's foot, a fungal skin infection?

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