Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1The Nervous System and Reflexes
A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 2Hormonal Coordination and Homeostasis
State the type of diabetes in which the pancreas produces little or no insulin.
- 3Inheritance, Variation and Evolution
Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 4DNA, Genetics and Inheritance
State one ethical concern raised by embryo screening.
- 5Variation, Evolution and Selection
State one advantage and one disadvantage of selective breeding in farm animals.
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