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# For making photosynthesis, every visible wavelength in the electromagnetic spectrum of light is utilized. UV-A light has a positive effect on the growing of the chloroplasts while UV-B light can slow down photosynthesis. t is not required in high amounts, so I will waive to use a UV lamp. The light Euglena gets naturally should be enough. [https://www.exciteled.de/de/spektrum-photosynthese] | # For making photosynthesis, every visible wavelength in the electromagnetic spectrum of light is utilized. UV-A light has a positive effect on the growing of the chloroplasts while UV-B light can slow down photosynthesis. t is not required in high amounts, so I will waive to use a UV lamp. The light Euglena gets naturally should be enough. [https://www.exciteled.de/de/spektrum-photosynthese] | ||
''Nutrition'' | |||
# Euglena is not able to produce vitamin B12 by itself. The absorption occurs by the phagocytosis. This lack can be compensated with a tiny piece of hard cheese or some wheat grain. | |||
# Because CO2 is required for the process of photosynthesis, it is recommended to add some stale mineral water from time to time. I will also use CO2 fertilizer for aquarium plants to see if this works as well. [http://www.schulbiologiezentrum.info/15.20%20Euglena%20Neufassung%20031203.pdf] | |||
''Initial state'' | |||
Before starting the experiment I checked under the microscope whether my Euglenas are still alive . In all three tubes (two with the medium I cooked and one with the „pure“ Euglenas I got for my work) they are moving. | |||
(photo and vid) | |||
''Setup'' | |||
I prepared six differnt vessels: | |||
*Tube 1 - unchanged Euglena medium; hard cheese | |||
*Tube 2 - unchanged Euglena medium; liquid fertilizer | |||
*Tube 3 - distilled water; hard cheese; liquid fertilizer; CO2 fertilizer once per week | |||
*Tube 4 - distilled water; hard cheese; liquid fertilizer | |||
*Erlenmeyer flask - boilded water; hard cheese; liquid fertilizer; stale mineral water once per week | |||
*beaker glass - boilded water; hard cheese; liquid fertilizer | |||
I varied the consistence of the mixtures to see which differences I can observe and which of them is the best medium for Euglena. | |||
==== Experiment 2 ==== | ==== Experiment 2 ==== |
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