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'''''How does Euglena react to colors? ''''' | '''''How does Euglena react to colors? ''''' | ||
''First attempt'' | |||
'''Setup''' | '''Setup''' | ||
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I filled a tube with the Euglena medium from tube 1 (capacity: 15ml) and filtered all of the cheese out with a sieve. I did this because I guess that it attracts the organisms too much, so that they will swim to the cheese instead of the light. | I filled a tube with the Euglena medium from tube 1 (capacity: 15ml) and filtered all of the cheese out with a sieve. I did this because I guess that it attracts the organisms too much, so that they will swim to the cheese instead of the light. | ||
To make the light colorful I cut out stripes of transparent paper and wrapped them around the tube. I chose the fundamental colors yellow, red and blue for the first attempt. To let no "normal" light on the bottom of the tube in, I also prepared a cover made of black nontransparent paper. | To make the light colorful I cut out stripes of transparent paper and wrapped them around the tube. I chose the fundamental colors yellow, red and blue for the first attempt. To let no "normal" light on the bottom of the tube in, I also prepared a cover made of black nontransparent paper. | ||
To not move the tubes when I put off the paper, I put them in my Euglena Workstation to keep them safe. So I can easily remove the paper without mixing the concentrations accidentally. I | To not move the tubes when I put off the paper, I put them in my Euglena Workstation to keep them safe. So I can easily remove the paper without mixing the concentrations accidentally. I placed the whole installation in front of a daylight lamp. | ||
<gallery> | <gallery> | ||
File:Color Experiment 1.JPG | |||
File:Color Experiment 2.JPG | |||
File:Color Experiment 3.JPG | |||
File:Color Experiment 4.JPG | |||
File:Shape Experiment 6.JPG | |||
</gallery> | </gallery> | ||
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'''Outcome''' | '''Outcome''' | ||
After two hours of illumination I removed the papers from the tube. | After two hours of illumination I removed the papers from the tube. The only remarkable change is that the whole Euglena concentration sank to the ground again. This is strange because this part was covered with dark nontransparent paper. By looking closer it is conspicuous that in the medium are very tiny pieces of decomposed cheese. Because of their tiny size I won't be able to filter them out. | ||
<gallery> | |||
File:Color Experiment 5.JPG | |||
File:Color Experiment 6.JPG | |||
</gallery> | |||
''Second Attempt'' | |||
'''Setup''' | |||
This time I am not going to transfer the medium from one tube into another. Instead of that I use the pipet to fill the medium in the tube after the cheese settled on the ground. In this manner I am able to avoid a high amount of cheese and maybe also a high Euglena concentration around it. | |||