Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
3rd October 2022
- 1Inheritance, Variation and Evolution
Define the term allele.
- 2DNA, Genetics and Inheritance
State whether cystic fibrosis is caused by a dominant or a recessive allele.
- 3Variation, Evolution and Selection
Give one example of variation that is caused purely by the environment rather than by genes.
- 4Ecology
Define community, in ecological terms.
- 5Ecosystems, Adaptation and Feeding Relationships
In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
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