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Branded Bleach is more effective at killing E. coli than Non branded bleach - An investigation
Member rating: No Rating | Words: 5000 | Submitted: Wed Oct 03 2007
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Is branded bleach more effective at killing E.coli than a non branded version? Contents Page Number 1. Hypothesis 1 2. Introduction 1 - 3 3. Plan 4 - 13 4. Results 14 5. Analysis 15 - 17 6. Evaluation 17 - 20 7. References/Bibliography 20 Appendices Attached Hypothesis Branded bleach, Domestos, will kill more bacteria than Non-branded Somerfield thick bleach. This will be shown by the larger zones of inhibition around branded bleach. Null Hypothesis There will be no significant difference between the zones of inhibition for each bleach. Introduction Both brands of bleach contain ingredients which are active in the death of the bacterium Escherichia coli, shown below. As a bacterial cell it is classified as prokaryotic which differs to eukaryotic cells found in humans; which means the cell's nuclear material is not bound by a nuclear envelope, prokaryotic cells also have fewer organelles and the volume/size of a prokaryotic cell is up to 10,000 times smaller. E.coli is a rod shaped Gram negative bacteria. Using the binomial naming...
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