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GCSE Biology Paper 1 (9-1 Exams)

Light Pondweed Photosynthesis Tube Gas Bubble Steps Needed

Front What are the steps needed to investigate how light intensity afffects the rate of photosynthesis
Back
  1. A white light is placed at a specific distance from the pondweed
  2. Pondweed is left to photosynthesis for a set amount of time when oxygen released will collect in the capillary tube
  3. A syringe is used to draw the gas bubble in the tube up alongside a ruler and the length of the gas bubble is measured
  4. Experiment is repeated with the light source at different distances from the pondweed

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