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.
● 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:
● 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
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
- 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
- Electric charge