Microbes are Everywhere
Aim of the experiment:
Prove that microbes are everywhere
Agar dishes NA, Petri dish S.D.A.(sucrose dextrose), swabs, cotton bud, labels and marker.
(A) – Isolate microbes from me (bacteria)
1- We marked, divided by 4 and labeled the bottom of our Petri dish. 2- On NA we swabbed areas such as: chicks, rings, underneath of a watch, sink and disinfectant trigger 3-We closed the petri dish, incubated it upside down, on 300C, for 48 hours.
(B)- Isolate microbes from surface (mold and yest)
1- We marked, divided by 4 and labeled the bottom of our Petri dish. 2- On S.D.A we used a wet swab-Dipped into dilhent bottle (contains sterile peptone) and swabbed: tap, handle press clothe, hair, inside of a shoe and glasses. 3- We closed the petri dish quickly, incubated it on 220C, for five days.
There was a slightly color difference between the petri dish NA and S.D.A
With the results we had we could conclude that microbes are everywhere.
We exposed the samples to the same condition. However, we couldn’t find a fungi (mold/ yeast) growth on clothe and glasses sample. What we think that it might happened was:
(a) – Clothe and glasses sample that we took were too small.
(b)- It wasn’t the right food source and conditions for that specific type of microorganism to replicate.
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