Category:OWWLabNotebookV1: Difference between revisions

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Sofia Zuniga, T5
BIO 210-002
Matt LeFauve
26 January 2016


                                                                                Differentiating Protists and Algae
'''Purpose'''
The purpose of conducting this experiment is to be able to successfully use a dichotomous key in order to identify and differentiate between unicellular and multicellular organisms. Utilizing unknown organisms from the Hay Infusion lab previously conducted, slides were prepared in order to conduct the experiment.  With samples from the Hay Infusion, various bacteria will be identified due to the current state of sample.
'''Materials and Methods'''
In order to complete this experiment, the Hay sample was first observed before beginning the experiment. A pipette was used to collect a sample from the bottom of the jar, and placed onto a clean slide. Three samples were collected from the bottom of the sample. Each sample was then analyzed under a microscope in order to identify the unknown organisms. Preceding this step, each prepared slide was identified following the dichotomous key. After this, the pipette was used again to collect two more samples from the top of the Hay Infusion jar. These samples were then analyzed under the microscope again and determined using the dichotomous key.
'''
Data and Observations:'''
Upon beginning the experiment, the Hay Infusion extract was observed. Visually looking at the sample, a white ring around the inside of the jar formed, most likely being some sort of bacteria. The water was of dark green color with a strong, fecal-like smell. In regards of the samples, each exhibited green and clear colors, an oblong or circular shape, and a lot of movement.
'''Conclusion'''
After performing this experiment, the results indicate that the sample collected contained both algae and protist samples. With the identification of each slide, samples from the top were algae due to the common characteristics of algae, while the samples collected from the bottom of the jar were protists.

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