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3 pages/≈825 words
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APA
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Biological & Biomedical Sciences
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Lab Report
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English (U.S.)
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Lab Report On An Experiment Carried Out About Bacterial Evolution (Lab Report Sample)

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Lab report on an experiment carried out about Bacterial Evolution

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Results and Discussion
Name
Institution
Results and Discussion
Results
In the first experiment, the inoculation at n=28 produced a distance of 789.93 mm and SEM 1.64 mm at 0.15% saline control plates. When the saline of the agar plates was increased to 15 percent, the inoculation with n=57 produced a distance of 55:46 mm and SEM of 1.53 mm. In the second experiment with the inoculation of at n=29, the distance observed was 80.90 mm with SEM of 1.64 mm. An increase in the salinity of Agar Plates to 15 percent with n=57 resulted in 60:23 mm distance and SEM of 1:55 mm. In the third experiment with n=29, the distance recorded was 82.00 mm with a SEM of 1:21 mm. In the 15 percent saline agar plates with n=57, the distance observed was 65.08 mm and SEM of 2.09 mm. The average distance for the control plates at 0.25 percent salinity was 80.61 mm and SEM of 1.57 mm. For the saline of 15 percent, agar plates, the average distance was 60.26 mm, and the SEM turned out to be 1.72 mm. Bacterial Evolution Pooled Data
Control Plates

15% Saline Agar Plates

* Inoculation 1 (n = 28)
¯ Distance: 78.93 mm
¯ SEM: 1.64 mm
* Inoculation 2 (n = 29)
¯ Distance: 80.90 mm
¯ SEM: 1.86 mm
* Inoculation 3 (n = 29)
¯ Distance: 82.00 mm
¯ SEM: 1.21 mm

* Inoculation 1 (n = 57)
¯ Distance: 55.46 mm
¯ SEM: 1.53 mm
* Inoculation 2 (n = 57)
¯ Distance: 60.23 mm
¯ SEM: 1.55 mm
* Inoculation 3 (n = 57)
¯ Distance: 65.08 mm
¯ SEM: 2.09 mm

The control plates contained 0.15% saline.
Discussion
H0: E. aerogenes adapts to relatively salty environments and can grow in a higher saline environment.
H1: E. aerogenes adapts to comparatively salty conditions and fails to grow in a higher saline environment.
At the salinity of 0.25 percent, the distance observed was 80.61 mm, and that of the SEM was 1.57 mm while in the salinity of 25 percent, the distance was 60.26 mm and that of SEM 1.72. Low salinity results in a divergence of the distance and convergence of the SEM while increased salinity brings about the convergence of the distance and divergence of the SEM. For instance, in the salinity of 0.25, it is observed that the distance moved further to 80.61 mm with the SEM moved closer to 1.57 mm. Similarly, increased salinity to 25 percent resulted in the reduction of distance to 60.26 mm while the SEM moved further to 1.72 mm.
According to Kempf & Bremer (1998), all the microorganisms contain a positive turgor as well as maintenance system for the outward-directed pressure. This forms the primary basis observed in the variation of the distance and the SEM i...
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