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20170504 160810.jpg | 20170504 160810.jpg | ||
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[[File:20170504 160810.jpg|thumb|left|Spirulina bateria under the microscope]] | |||
[[File:20170504 161252.jpg|thumb|right|Spirulina bateria under the microscope, very close]] | |||
</gallery> | </gallery> | ||
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Under the microscope (lense PL4 / 0.10) | Under the microscope (lense PL4 / 0.10) | ||
[edited on the 06/06/2017] | |||
I observed and described the spirulina bacteria based on wrong assumptions. I was not aware of the obvious fact that all green spirulina bacteria are able to do photosynthesis and therefore alive. This is why I do not recommend reading the italic paragraph below. | |||
''My observations are based on the assumption that straight, but spiral spirulina bacteria of a normal green color are healthy and alive while clumsy bits, broken spirals or pieces floating around in the sample are dead. I often saw broken pieces sticking together, tied to each other. This supports the observation that spirulina bacteria untouched by others / freely staying in the medium are healthy and alive. Apparently, unhealthy, destroyed or dead spirulina are a darker color. 1. Spirulina: In the original surrounding, I observe many clumsy/broken bits of spirulina. Some living bacteria can be perceived, but primarily strange green structures that might be compared to very small dried apples with their skin, but in a rectangular form. Inside of these rectangular organisms are little organisms looking like dried flowers. In this sample, there are a lot of spirulina bacteria knotted together. All in all, the spirulina do not seem very lively. 2. There are many seemingly dead spirulina organisms that twisted to circles or half-circles or that broke. Only a few bacteria appear alive. In another sample of the same tube are less dead organisms, but not many organisms anyway. The water does not seem very clear which is no surprise as it is taken from the river. 3. In this sample, I can see that the water is taken from a natural surrounding (the pond) because the water is not extremely clear and a few other organisms are in the sample as well. These other organisms are bigger than spirulina and have a different form. Some look like small dried flowers or snowflakes, others like little algae or plants. Overall, there are probably more living than dead spirulina. 4. The water is very clean as it is distilled water – it does not seem to contain other easily perceivable organisms or dirt. There is not much “going on” in this sample – a few living and some dead spirulina are visible.'' | |||
In conclusion, even though I could remark some differences between the samples, the water does not seem to highly influence spirulina. | In conclusion, even though I could remark some differences between the samples, the water does not seem to highly influence spirulina. | ||
I might try a different experiment in which some spirulina are kept without CO2 and others ''with'' the inflow of oxygen… | I might try a different experiment in which some spirulina are kept without CO2 and others ''with'' the inflow of oxygen… |
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