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Edexcel International A Level · Biology

Practical Skills in Biology II(Unit 6) revisionBuild it yourself.

Unit 6 covers 3 topics and 13 subtopics. Pick the ones you keep getting wrong and LOCKIN writes you an original exam-style paper, with a full mark scheme.

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What's in Unit 6

Every topic below can be selected on its own, or combined into one paper.

Energy, Environment and Microbiology practicals

  • Rate of photosynthesis: light, wavelength, temperature and carbon dioxide
  • Ecology of a habitat using quadrats and transects
  • Effect of temperature on the development of an organism
  • Growth of microorganisms in liquid culture
  • Effect of different antibiotics on bacteria

Usually 3–11 marks

Respiration, Muscles and Coordination practicals

  • Redox indicators and respiration in yeast
  • Respirometry: rate of respiration and RQ
  • Spirometer traces: tidal volume, breathing rate and oxygen consumption
  • Amylase production in germinating cereal grains

Usually 3–11 marks

Experimental design and analysis

  • Planning an investigation to test a hypothesis
  • Evaluating methods and drawing valid conclusions
  • Processing and analysing quantitative data
  • Choosing and interpreting statistical tests

Usually 3–12 marks

Other Biology units

Unit 1Unit 2Unit 3Unit 4Unit 5

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