How the swimming behavior of paramecium can be affected by the environoment.pdf

How the swimming behavior of paramecium can be affected by the environoment.pdf

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Unformatted text preview: The impact of environmental conditions on the swimming patterns of the Paramecium. Charles Freda, Flavian Philip, Johana Thano, Rabab Alhadae Key Observations Human activity is negatively impacting all species throughout the globe. Habitat destruction, pollution, rise of temperatures, and global change due to the increases of greenhouse gases in the atmosphere, are effecting even unicellular organisms such as Paramecium . The current climate requires a re-evaluation of the impact of temperatures in a variety of ecosystem elements. The question that was raised and lead to the hypothesis is: How do environmental factors impact the swimming behavior of Paramecium? Hypothesis & Justification: Our hypothesis was that if the Paramecium is introduced to environmental changes then the swimming pattern of the Paramecium would change. Justifications: ● ● Paramecium are naturally negatively charged Opposites attract, so they will swim towards the positive charge Prediction: _ When both negative and positive charges are introduced to the environment that the Paramecium resides, the negatively charged Paramecium would be attracted to move/swim towards the positive charge . The Experimental Design: Dependent Variables: ● Where the Paramecium swims ● How fast they swim Independent Variable ● Amount of charge given to the Paramecium ● Amount of solution Sample Size: 4 ml of Solution Treatment Levels: ● Amount of solution of Paramecium used: 225mL ● Amount of charge: 30 V Species Used: Paramecium tetraurelia Replications: Each Group members’ observations Methods Used: 1. Observed the sample size through the microscope ● Used the different magnifying lens’ ● Different levels of light and focus 2. Observe the Paramecium swim across a grid, and time how long it takes for them to move past a certain amount of boxes to determine their speed. Swimming behavior of Paramecium in a depression slide Non linear Spiral Makes turns/Disordered Move fast Swimming Speed - 1.25 mm/sec Our Results: - As a result of technical problems we encountered while using the microscope, our group was unable to see the results to prove or disprove our hypothesis. However, we were able to see within the earlier stages of the lab that there was a significant difference in the swimming pattern of the Paramecium from when we first observed it to the time when we were last able to observe it within step 20 of the lab. - At first the organism was moving extremely fast within a zig zagged motion. Contrarily, once it was electrically shocked it began to move within spiralling motions and many of the Paramecium even became completely immobile from the voltage that it received. Future Experiment Should Consider: - Better adjustment of the microscope to help us see the extremely minuscule organism more clearly. - Consider a specific amount of solution. Should be (200-225 mL). ...
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  • Fall '16
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