- There are many bacteria
- As a specimen, there were places where many unspecified people touched,
such as doorknobs and railings of stairs, but you can see that there are
many bacteria in any place.
- From this experiment it was difficult to judge the difference in the amount
of bacteria and what type of bacteria it was, but in any specimen many
bacteria could be confirmed.
- Bacteria breed in control experiment
- Bacteria multiplied a lot in control experiments (that is, under the same
circumstances as other specimens without preparing any specimens). It is
thought that this occurred because bacteria touched the air contained in
the petri dish or when agar was poured in, and the breeding occurred.
- However, the degree of breeding of bacteria was less than that of other
specimens, so it is considered to have been established as an experiment.
- There is not much change in the state of washing hands.
- I used a paper towel when wiping my hands. In doing so, bacteria could
be removed by wiping, and it is conceivable that there was no difference
in the result.
- It is also possible that the organic matter contained in the soap breeded
like a bacterium.
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- On the next page we will look at "【Experiment 2】 Environment change
and bacteria".
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