Daily Practice
GCSE Science
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25th October 1991
- 1Human Defences, Vaccination and Drug Development
Explain what is meant by a double blind trial.
- 2Bioenergetics
State three factors that can limit the rate of photosynthesis.
- 3Photosynthesis
Why is photosynthesis described as endothermic?
- 4Respiration, Exercise and Metabolism
Define oxygen debt.
- 5Homeostasis and Response
A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1991, including the monthly compilation PDF.