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GCSE Biology 2020-2022 OCR Gateway

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Question:

Explain a Practical that Proves that Carbon Dioxide is made from Aerobic Respiration?

Author: eric_galvao



Answer:

-You want to use Hydrogen-Carbonate Solution which is an Indicator which changes from Red to Yellow when CO2 is Present -Then, soak Dry Beans until they Germinate, which lead to them Respiring -Then also Boil some other Beans, Effectively killing them leading to No Respiration -Now, with the Germinating Seeds, place in a Tube with the Indicator - and after an Hour [ish] the Indictor will go Yellow -The Dead Beans in a Tube with the Indictor will have it stay Red. So there we Have it - Respiration makes Carbon Dioxide.


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