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Peer review question - .” According to Ekelund’s...

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Pinal Patel TA: Jessica Hoffman Thursday, 8-9:55 AM lab Ask a question week 2 Question: What is the effect of varying intensity of light on movement of Euglena? Explanation: Euglena is a phytoplankton in which organisms photosynthesize. Euglena is able to move through aquatic environments by using a large flagellum for locomotion. Euglena has an eyespot that absorbs light to do process of photosynthesis. During the lab, Euglena was moving at faster rate under the light. If the intensity light varies in the culture of Euglena, it might have different affect on the movement. According Donat-P. Hader and his colleagues’ experiment, “the percentage of upward swimming cells at the surface is obviously higher under high light … Also, under dim light the largest fraction of cells was near the bottom.
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Unformatted text preview: ..” According to Ekelund’s experiment, he found out that “the speed for E . (Euglena) gracilis was much more affected by UV-B radiation after adaptation to high visible light and when E. gracilis was adapted to low visible light the speed was most affected after exposure to high UV-B radiation”. Works Cited Donat-P. Häder, et al. "PAR and UV Effects on Vertical Migration and Photosynthesis in Euglena gracilis." Photochemistry & Photobiology 83.4 (2007): 818-823. Academic Search Complete . EBSCO. Web. 30 Jan. 2011. Ekelund, Nils G. A. "Influence of UV-B radiation on photosynthetic light-response curves, absorption spectra and motility of four phytoplankton species." Physiologia Plantarum 91.4 (1994): 696-702. Academic Search Complete . EBSCO. Web. 30 Jan. 2011....
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This note was uploaded on 08/10/2011 for the course BIOL 1108L taught by Professor Stanger-hall during the Spring '09 term at UGA.

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