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PAG 2: Biological Molecules

Investigate the effect of a variable on enzyme activity

Required PracticalOCRA-Level

๐Ÿ”ฌ Equipment Required

  • Test tubes
  • Water baths
  • Enzyme and substrate solutions
  • Buffer solutions
  • Colorimeter
  • Cuvettes
  • Stopwatch
  • Thermometer

๐Ÿฆบ Safety Precautions

  • Take care with hot water
  • Wash hands after handling enzymes
  • Some buffers may be irritants

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About PAG 2: Biological Molecules

PAG 2: Biological Molecules is a required practical for OCR A-Level Biology. This practical investigate the effect of a variable on enzyme activity

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in OCR A-Level Biology exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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