Choose from 500 different sets of microbiology lab identification unknowns flashcards on quizlet log in sign up quadrant streak with unknown bacteria what is done on day 2 microbiology lab week 8-9: unknown identification. If you have an unknown bacteria and you want to identify it, you'll typically perform a gram stain and then observe the colony appearance and the individual features at that point, you can say you have, for example, a gram-negative, aerobic streptobacilli. To identify the bacterial unknowns in a mixed culture by morphological and biochemical methods principle: the identification of bacteria is a careful and systematic process that uses many different techniques to narrow down the types of bacteria that are present in an unknown bacterial culture.
Bacteria may seem like very simple organisms and you might think that most of them share many characteristics in fact, every species is unique and has particular characteristics this makes it possible to identify an unknown species. Identification of unknown report abstract: the purpose of this lab was to determine the identity of an unknown bacteria slant culture the unknown was identified using differential tests to determine its metabolic and morphology characteristics.
Step these tubes were developed for clinical use to identify bacteria they contain thirteen compartments, each with a different type of media, which will test for the presence of a different enzyme or set of enzymes in the unknown bacteria students innoculate the compartments with their unknown bacteria and place the tubes in the 37°c incubator.
Identify the unknown bacteria, #3 identification of unknown bacteria yields multiple benefits in many different areas in the research of microorganisms in this experiment i performed many different test dealing with things such as the presence of enzymes, fermentation abilities and different chemical reactions. Example of unknown lab report, microbiology by cpr memphis at august 22, 2013 | 11:49 am the procedures from the laboratory manual by mcdonald were used to accomplish the tests needed to find the two unknown bacteria (3) the correct identification for the gram positive bacterium was bacillus cereus.
The gram negative bacteria in unknown #123 is a very aggressive bacteria that makes the growth of a gram positive bacteria difficult even on an msa agar, it took a few tries and several isolations to get the gram positive to successfully grow. Abstract the objective of these series of experiments was to identify an unknown bacterium broth culture #8 was randomly selected and subjected to qualitative tests for taxonomic identification each experiment served to help eliminated and match the unknown culture to a culture worked with in a lab a gram stain was performed in which the unknown was gram positive.
Example of a microbiology unknown lab report by taylor autry introduction in this paper i will discuss the processes of how i came to find my two unknown bacteria this will be a vital task to take with me into my profession for many reasons this identification was reached by only one biochemical test and close observation a gram stain. How to identify an unknown bacteria in microbiology by angela libal updated march 10, 2018 begin the process of identifying unknown bacteria by observing their physical characteristics, such as cell wall, shape and linkages. Introduction the identification of an unknown is beneficial in many ways, including the identification of bacteria in diseases, and in research identifying bacteria can lead to many new discoveries such as new species or the evolution of a known species. The instructor asked that each student isolate the two unknown bacteria and then identify each the lab techniques and procedures used throughout this experiment were from mcdonald’s laboratory manual (4.