Staphylococcus aureus flowchart 1 unknown 103 unknown “a” gram positive gram stain gram positive cocci staphylococcus aureus staphylococcus epidermidis enterococcus how to identify pseudomonas aeruginosa unknown lab report sophie fisher microbiology introduction it is quite important to be able to identify various microbes such as bacteria fungi and how to identify bacillus cereus steps to. Start studying microbiology unknown - gram positive cocci/catalase positive learn vocabulary, terms, and more with flashcards, games, and other study tools. A gram stain is a laboratory procedure used to detect the presence of bacteria and sometimes fungi in a sample taken from the site of a suspected infection it gives relatively quick results as to whether bacteria or fungi are present and, if so, the general type(s. Guide to the identification of an unknown bacterium – methods and report format pg 1 identification of an unknown bacterium and writing up a report a standard part of nearly all lab courses in introductory microbiology is an activity end of one arrow and gram negative after the other follow each result with a list of bacteria still. Gram stain or gram staining, also called gram's method, is a method of staining used to distinguish and classify bacterial species into two large groups (gram-positive and gram-negative) the name comes from the danish bacteriologist hans christian gram , who developed the technique.
Unknown lab report this lab report bacteria, while others were even more specific and used only for cocci bacteria the tests performed and what constitutes a positive and negative test are as follows bacteria because all of the possible unknown gram (-) bacteria were catalase positive this test is used to detect the presence of. Unknown lab report unknown number 115 gram positive cocci gram negative baccillus positive mannitol test positive catalase test also the blood agar and spirit blue agar test results confirmed this conclusion the gram negative (-) bacteria possibilities were escherichia coli, klesiella pneumoniae, enterobacter aerogenes, proteus. Introduction gram staining is the most essential and universally used staining technique in bacteriology laboratory gram-staining was firstly introduced by cristian gram in 1883this method is used to distinguish between gram positive and gram-negative bacteria which have consistent differences in.
Unknow bacteria lab report unknown 36 introduction the purpose of this lab was to identify two unknown bacteria from a mixed culture the reason for identification of unknown bacteria was to help students recognize different bacteria through different biochemical tests and characteristics. Experiments such as gram stain, simple stain, negative stain, and other important tests in identifying unknown bacteria are performed with the knowledge gained from the test results, a dichotomous key will be constituted, which will then be used to analyze a bacterial unknown. The lab instructor provided information that one species was a gram-positive bacteria and the other species was a gram-negative therefore, the next necessary step for correct identification of each unknown was to complete a gram staining procedure described on page 67 of the lab manual (2. The microbe identification lab report prepare another gram stain of the unknown bacteria the majority of the bacteria on this slide were pink – gram-negative i’m going with that} perform catalase test again to confirm catalase positive result. Here is an excellent example of how to write an unknown lab report in microbiology class please note that due to formatting issues the flow charts had to be removed the two microorganisms were identified one was a gram-positive bacteria, the other was a gram-negative bacteria a series of biochemical tests were performed based on the.
Unknown lab report unknown organism #6 ann le (phuoc) may 6, 2010 dr carrington microbiology lab- mw 12:50 le 1 i introduction my unknown organism #6 is morganella morganii, which is a gram-negative bacillus rods commonly found in the environment and also in the intestinal tracts of humans, mammals, and reptiles as a normal flora (3, 5) this. The unknown number 123 handed out by the professor on march 20, 2014 contained both a gram positive bacteria and a gram negative bacteria at this point everything that had been learned in microbiology lab and that had been explained in our lab manual (1) was put into action. I started an unknown bacteria lab in school today i was handed a pure colony of an unknown bacteria the first thing i did was a gram stain it turns out to be gram positive cocci.
Microbiology lab, flow chart for gram-staining and cocci species top unknown gram negative bacteria see more microbiology unknown lab report examples dissertation perceptions of education find this pin and more on microbiology rotation by rachel noble. How to write an unknown lab report in microbiology general unknown reports in microbiology are written in scientific format scientific writing is written differently from other types of writing the results of the exercise or experiment are what are being after performing the gram stain to determine that the unknown was a gram negative rod. Methods could also be referred to the lab manual pages 159-163 microscope e1 was used to view unknown number 20 to determine whether the bacteria were gram-positive or gram-negative and cocci or bacillus. Learn microbiology lab identification unknowns with free interactive flashcards choose from 500 different sets of microbiology lab identification unknowns flashcards on quizlet.
Unknown lab report unknown number 110 gram positive purple cocci bacteria were identified using a microscope the gram negative were unable to be isolated from the nutrient agar the last test was a negative catalase test that led to the only gram negative bacteria left which was e faecalis. Gram-positive cocci shaped bacteria were identified using the microscope several biochemical tests were chosen based on the identification table which was given by the lab instructor these tests and results were recorded on the flow chart and the tables on the following pages for the gram-negative and gram-positive bacteria. Structurally, the gonococci are similar to other gram-negative bacteria the cell envelope is composed of a cytoplasmic and an outer membrane, separated by the periplasmic space the outer membrane consists of proteins, lipo-oligosaccharides, and phospholipids. Bacterial pathogens as they pertain to the usmle step 1, specifically the gram positive cocci.
Gram negative unknown lab report essay sample abstract the unknown gram negative bacterium inoculated in a tryptic soy broth medium was randomly selected from a group of other unknowns. The gram stain technique was was used on unknown unknown number 20 the unknown appeared to be gram negative and cocci shaped since this is an unknown, the literature literatur e value is unknown report microbiology gram stain lab report your name email. Unknown lab report unknown organism #6 ann le (phuoc) may 6, 2010 dr carrington microbiology lab- mw 12:50 le 1 i introduction my unknown organism #6 is morganella morganii, which is a gram-negative bacillus rods commonly found in the environment and also in the intestinal tracts of humans, mammals, and reptiles as a normal flora.