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I need help determining what bacteria I have found on agar

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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I need help determining what bacteria I have found on agar

Postby echthroi » Thu Mar 03, 2011 1:21 am

My finding are the following,

(cut and paste)
Appearance:
Dish one containing the swabbed doorknob bacteria grew three distinctive colonies. A dark yellow colony that was a rougher outside circle, a lighter yellow colony with a smooth outside circle, and finally a white colony which was round and smooth. Dish two containing the swabbed phone before sterilization grew the same colonies as dish one. Dish three containing the swabbed phone after sterilization grew four distinctive colonies. A dark yellow colony that was a rougher outside circle, a lighter yellow colony with a smooth outside circle, a white colony which was round and smooth, and finally a red colony that was a smooth circle that resided directly inside of the dark yellow colony.

bacteria:
Dark yellow: cucus
Light yellow: cucus
White:cucus
Red: cucus for the Dark yellow in it, and Protista (One with fuz on it's feet)

I really am at a stump and I just can't find anything online to help me figure out what I was possibly looking at.
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Postby canalon » Thu Mar 03, 2011 1:41 am

Well, first your sterilization methods apparently suck. Because if you grow something after sterilization there is a problem.

Second, it is coccus/cocci not cucus.

Third, pictures? details? determination of a bacterial species on just the kind of info you give is impossible. Basic would be gram stain, and a few metabolic tests. Oh and tell us what medium you used.
One of your yellow cocci is very likely a Staphylococcus aureus as it is a frequent inhabitant of human skin. For the rest Streptococcus, maybe for the white one, as they are quite frequent, but there are many other possible.
And I have no clue how you come to the conclusion of a protist (fungi/mold are also quite likely on this kind of swab), neither do I see what a fuzzy foot can be when it refers to anything else than a hobbit. But even if they are small, they are studied by cryptozoologist, rather than microbiologists.
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)
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Postby echthroi » Thu Mar 03, 2011 2:19 am

I didn't do the lab, trust me... If I did nothing would have grown, and the control would be water, not a damn doorknob.

Thanks for correcting my spelling error

No pictures, no details. No info on medium,

I am having like major brain farts, the protists has cilla on it, it might not be a protist, I have no clue.

my teacher is asking some impossible from basically no information. Not to mention she gave me a 0 on my first lab because I wrote too long an introduction... She didn't even grade it, just said it's too long and gave a zero.
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