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AQA A level Biology Required practical 9 Yeast methylene blue practical watch

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    Hi,Does anyone have a set of results for required practical 9. Investigation into the effect of a named variable on the rate of respiration of cultures of single-celled organisms. We have tried to complete the practical in lessons but can't get the dye to change colour (still blue after 14 minutes)Thanks
 
 
 
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Updated: November 14, 2017
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