Daily Practice · GCSE Science

Daily Practice - GCSE Science

9th February 1997

5 questions · GCSE · 584 questions in this band

1
Organisation
An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
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
Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.

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