Blog 22

There are a few things that could have caused error in our experiment.  One is that it is possible that other germs and bacteria other than E. Coli could have gotten into our petri dishes.  This could cause our data to have errors because the other organisms could have altered the antibiotic resistance.  Also because the amount of other organisms that got into the petri dishes could have varied from petri dish to petri dish, the data would not necessarily be uniform.  Another error could be within the E. Coli itself.  It is possible that in some of the samples some of the E. Coli may not have actually been alive.  If one petri dish had more alive E. Coli than another petri dish, the data created may not be completely accurate. Also the agar could not have been the exact same consistencies in every petri dish.  When the agar was poured it may thicken in different areas and have different consistencies when it cooled, which would make every dish not completely uniform which could have an effect on the results.  Another could be the temperature that the E. Coli was living in.  Even if the degree difference was small each day it still could have had an affect on how the E. Coli survived and colonized.