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AQA GCSE Combined Science: Trilogy required practicals

The required practicals you can be asked about in the exam, each with its method, variables, safety points and expected results. Questions on practicals are worth at least 15% of the marks.

1using a light microscopeCell biology · Cell structure · spec 4.1.1.2 Read
2OsmosisCell biology · Transport in cells · spec 4.1.3.2 Read
3food testsOrganisation · Animal tissues, organs and organ systems · spec 4.2.2.1 Read
4the effect of pH on amylaseOrganisation · Animal tissues, organs and organ systems · spec 4.2.2.1 Read
5light intensity and the rate of photosynthesisBioenergetics · Photosynthesis · spec 4.4.1.2 Read
6reaction timeHomeostasis and response · The human nervous system · spec 4.5.2.1 Read
7Sampling: distribution and abundanceEcology · Organisation of an ecosystem · spec 4.7.2.1 Read