Bacteria experiment

Reply Sun 30 May, 2010 06:56 am
I have so far decided on testing the environment's effect on bacteria growth in a petri dish. But I need a second experiment which is similar to the first one. I'm in year 10, and I'm wondering whether this is too simple of a project. And I've got only two weeks! Need help!
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Reply Mon 31 May, 2010 05:51 am
Are your cultures all equivalent and of the same strains?

ok now lets do the following

1Make a solution of 2% benzene in water with a 10% alcohol solvent. Make another solution , benzene free.

2Mark your cultures
In one set of dishes aspirate like one fine squirt iof the benzene mix and , in the other set, just spry the alcohol water solvent mix.

Develop your cultures and sample after 24 48 and 72 hours. Benzene should give you some usable data on environmental effects of toxicants at low levels.

For a neat presentation , use some stains in your agar.
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Reply Tue 1 Jun, 2010 06:31 am
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