LabReport8_BIO 341 L_JGDONE293.docx - Jamerial Gardner BIO 341L-01 Date of Experiment Date Submitted General Microbiology Lab Spring Semester 2019

LabReport8_BIO 341 L_JGDONE293.docx - Jamerial Gardner BIO...

This preview shows page 1 - 3 out of 9 pages.

Jamerial Gardner BIO 341L-01 Date of Experiment: April 17, 2019 Date Submitted: April 26, 2019 General Microbiology Lab Spring Semester 2019 Experiment 8: Bacteriological Examination of Drinking Water
Image of page 1

Subscribe to view the full document.

Abstract Throughout this experimental process, it took about a week and half to complete and record the data results for each series of steps. This experimental process began with the pouring of the petri dishes, collecting water samples, presumptive test, and confirmed test. During this process, we manipulated two different microorganisms, Bacillus and E. coli , and used three different water samples, fountain water, bottle water, and sink water. We also utilized lauryl tryptose broth in a water sample to better be able to identify whether it was either negative with no gas present versus it being positive with gas present. This experimental step resulted in all negatives, meaning there was no gas present in each sample collected. We then streaked our EMB agar with the samples collected on separate petri dishes and we incubated them under 28.8 Celsius for a 24-hour period. Then, we alternated between incubating each dish and recorded our results which were Figure A & B had no color present and Figure C had a hot pink, metallic color of aggregated bacterial colonies and as for Figure D it had a metallic green, shiny color texture to it with the presence of tiny aligned bacterial colonies. In the end, the experiment showed that Figure A & B were inconclusive; but Figure C had a gram-positive result and Figure D had a gram-negative result. Lastly, we determined that Figure C was Bacillus and Figure D was E. coli .
Image of page 2
Image of page 3

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask bonus questions You can ask questions ( expire soon) You can ask questions (will expire )
Answers in as fast as 15 minutes