Blog 22: Errors

Well… this experiment has had many errors in its time. Whilst cutting the apples, we had neglected to actually measure them or weigh them afterword which, looking back, could have made some things easier and keeping the apples from being in alternate shapes, weights and sizes. Following this, we put Bacillus Cereus into our test instead of E. coli. This was a mistake that could easily have been avoided if we had read the labels which, upon looking back, may have also been a smart choice. Following that the petri dishes that we were using for our controls seemed to have been contaminated with other small, white bacterias which were growing in little clumps in several of the dishes. When we noticed the small little growths inside it we realized it could mean that the other dishes of the experiment could also have been contaminated. This could be caused by the fact that some of us a few times had forgotten to wear gloves and once the gloves had been torn with a slight hole in them. After this some of the petri dishes' agar shriveled up while other petrie dishes bottoms turned into a mushy soup which seemed strange but not unexpected since we had trouble controlling the amount of precipitation in the petri dish despite the fact that we had sealed the outside with a special tape but still had to set it right side up instead of the usual upside down position.