27 lab 3 results i differential stains a gram stain draw and label examples of escherichia coli and staphylococcus epidermidis b acid-fast stain draw and label examples of mycobacterium smegmatis and staphylococcus epidermidis mycobacterium smegmatis & staphylococcus epidermidis questions: 1 what is the difference between a simple and a differential stain_____. Electron micrograph of staphylococcus epidermidis colonizing a vascular catheter case study lab report for lab 15: staphylococci the concept behind the case studies presented in lab 15 used to illustrate the genus staphylococcus is for you and your lab partners as a group to: 1. Staphylococcus epidermidis (s epi), which is known to be gram positive, and escherichia coli, which is known to be gram-negative if the gram stain procedure works as it should, s epi will be purple and e coli will be.
Staphylococcus epidermidis mixed culture broth: 3 types of microbes serratia marcescens escherichia coli staphylococcus epidermidis professor diane hilker refer to lab manual for directions. Microbiology unknown lab report by courtney wiedemer 12/06/2012 introduction staphylococcus epidermidis belongs to the genus staphylococcus it is typically found colonizing the skin and mucosa of humans s epidermidis is part of the humans’ normal flora. Micro lab- identification of staphylococci study guide by bayhamm includes 32 questions covering vocabulary, terms and more quizlet flashcards, activities and games help you improve your grades. Unknown lab report unknown number 115 introduction the process of identifying bacteria is like solving a mystery all requiring is to identify the clues each clue will offer possibility to solve the puzzle streak isolation white colony gram positive cocci staphylococcus aureus staphylococcus epidermidis enterococcus faecalis mannitol.
Lab exercise: staphylococcal, streptococcal & enteric unknowns the bacterial genus staphylococcus contains three species of medical importance: s aureus, s epidermidis and s saprophyticus of these three, only s aureus is typically considered to be pathogenic, except under. Report this number as number of s epidermidis, and micrococci (a) characteristic s staphylococcus aureus identification characteristics and enterotoxigenicity j. Unknown lab report microbiology staphylococcus epidermidis carly quijano april 12, 15 biol_2325l_01 spring 2015 this preview has intentionally blurred sections after many test we concluded that our specimen was staphylococcus epidermidis and we were correct. Unknown lab report unknown number 103 (staphylococcus aureus and klebsiella pneumoniae) michelle gudorp general microbiology spring 2013 introduction it is important to understand why a person would want to identify between different bacteria. Background staphylococcus aureus is a ubiquitous commensal bacterium on human skins and anterior nares, but frequently causes severe infections in humans rapid and direct identification of s aureus is crucial for proper management of patients with skin infections, abscesses, septicemia/bacteremia, gastroenteritis, endocarditis, toxic shock syndrome and certain food intoxications [2,3.
Staphylococcus epidermidis is a gram-positive coccus, nonpigmented, bacterium this organism, usually 05 to 15 mm in diameter, is a normal inhabitant of the human skin that grows in clusters this organism, usually 05 to 15 mm in diameter, is a normal inhabitant of the human skin that grows in clusters. Pathogen safety data sheet staphylococcus epidermidis characteristics morphology gram-positive cocci, usually occurs in clusters, non-spore forming, non-motile, coagulase positive. Coagulase test is used to differentiate staphylococcus aureus (positive) from coagulase negative staphylococcus (cons) coagulase is an enzyme produced by s aureus that converts (soluble) fibrinogen in plasma to (insoluble) fibrinstaphylococcus aureus produces two forms of coagulase, bound and free. Unknown lab report this indicated that the unknown was staphylococcus aureus or enterococcus faecalis then a nitrate test was performed which had a positive reaction meaning the reduction of nitrate to nitrite a catalase test was performed which had a positive reaction for the bacterial enzyme catalase. Example of a microbiology unknown lab report by taylor autry staphylococcus epidermidis, or enterococcus faecalis the next test performed was a nitrate test which gave a positive result the two bacteria that give a positive result for this test are staphylococcus aureus and staphylococcus epidermidis.
Figure -1: dna hydrolysis test a positive staphylococcus aureus b positive serratia marcescens c negative: staphylococcus epidermidis if the organism that grows in the medium produces deoxyribonuclease, it breaks down dna into smaller fragments. Lab report dr browder april 23, 2002 antibacterial ability of different mouthwashes abstract: in the microbiology lab, we tested five different mouthwashes, using water as a control, to see which mouthwash was the most effective at killing bacteria the two types of bacteria used were staphylococcus epidermidis and bacillus subtilis the. Microbiology report form for s aureus below are three examples of microbiology report, filled by microbiologist after laboratory testing, and sent back to the patient’s doctor a) report for a drainage from a skin carbuncle, infected by s aureus.
Staphylococcus aureus is capable of fermenting mannitol (left side of left plate) while staphylococcus epidermidis is not (right side of left plate) top glucose broth with durham tubes this is a differential medium it tests an organism's ability to ferment the sugar glucose as well as its ability to convert the end product of glycolysis. Plate or tube inoculations on the first lab session in the week it is necessary that you staphylococcus epidermidis positive coccus staphylococcus saprophyticus positive coccus such notes will become the “daily log” section of your final ou report pay specific attention to details such as the date, plate type, temperature of. Staphylococcus epidermidis, is a gram positive, and is part of our normal flora this bacterium is one of thirty-three species belonging to the genus staphylococcus (staphylococcus) staphylococcus epidermidis does not cause illness and it is known that some strains may even have a beneficial role for humans.
Test two staphylococcus species, staphylococcus aureus and staphylococcus epidermidis for the enzyme coagulase by preparing a heavy, uniform suspension of bacteria in a small drop of distilled water on a slide. Organism a was identified as staphylococcus epidermidis, due to the gram-positive cell wall, coccus shape, yellow colonies, positive catalase test, positive glucose + bromcresol purple slant, and negative mannitol salt agar plate, which are all characteristics of staphylococcus epidermidis. Lab report for staphylococcus aureus microbiology lab reportpractica #1btc307lamber amelingmeierthursday, september 18, 2008objectivesin this lab experiment two different types of bacteria, escherichia coli and staphylococcus aureus, were grown singly and mixed on four different types of agar in order to observe the varying morphologies within the colonies. Microbiology 20 biochemical unknown – spring 2009 (due may 14th) (see pg 70 of lab manual) o color (observe color of colonies as well as any changes in color of agar) staphylococcus epidermidis streptococcus pyogenes streptococcus salivarius gram-neg chart a hydrophila a faecalis c freundii e aerog e cloacae e coli k pneum.
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. Gelatinase test nutrient gelatin is a differential medium that tests the ability of an organism to produce an exoenzyme, called gelatinase, that hydrolyzes gelatin gelatin is commonly known as a component of gelled salads and some desserts, but it's actually a protein derived from connective tissue. Complete the aseptic technique and culturing microbes labpaq experiment next, complete the microbial identification experiments listed below and catalase labpaq experiment using escherichia coli and staphylococcus epidermidis the discussions from parts a1 and a1a belong in the introduction of the lab report 2.