Question

You have some okd of physical disfigure and melt the plastic). After sterillzing the plates, pouring the sterilized agar medium, and then leaving the piates out at room temperature for a dey or two to let them solidify and dry, you find contaminating bacterial colonles growing on the agar. Predict what has happened in this situation. Petri dishes that you would like to use for pouring bacteriological ager pletes. The only method 30 2 Multiple Choice The lids of te Pe br Air got into the poured agar plates, comtaminating them The ager had bacteria in & even after sterlization in the autocleve.

Answer 1

You have some old plastic Petri dishes that you would like to use for pouring bacteriological ager pletes. The only method of physical sterilization is ultraviolet radiation sterilization with your UV ight (you cannot use the autocleve because twl disfigure and melt the plastic). After sterilizing the plates, pouring the sterilized agar medium, and then leaving the plates out at room temperature for a dey or two to let them solildify and dry, you find contaminating bacterial colonies growing on the agar. Predict what has happened in this situatiorn 8 Mutiple Choice The lids of the Petri dishes were nacveñenty let on whle being sterlised The room temperonure enhanced the growth of nomel biots of the iga Air got into the poured ager plabes.comtaminating them The ager had bacteria in t, even after sterlication in ther astociave Neg Prex 30

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