Staphylococcus epidermidis is one of the most prevalent microorganisms found on the human skin and in the mucous membranes‚ however‚ it is a typically overlooked bacterium because there is very little that is known about it. Though it is not as aggressive as its cousin Staphylococcus aureus‚ Staphylococcus epidermidis is the most frequent cause for nosocomial pathogens‚ especially among newborns‚ the elderly‚ and anyone who has a compromised immune system. These infections are usually associated
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Agar and Media Preparation— Agar plates containing King’s B Agar were often used throughout the experiment to support growth of Pseduomonas fluorescens. A recipe was used that included a mixture of 10g Proteose Peptone #3‚ 1.5g Potassium Phosphate Dibasic (K2HPO4)‚ 30ml 50% Glycerol‚ ~965ml water and 20g agar. The mixture‚ post- autoclave‚ was left to cool and 5ml 1M Magnesium Sulfate (MgSO4) was added and created about 40 plates. King’s B Medium was made using the same procedure as the King’s B
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our society many things are considered a necessity a standing leader‚ currency‚ entertainment‚ even competition. These are only a few of the things we see necessary in our society. Our culture has shifted from admiring hard work and dedication to glorifying entertainment and our celebrities. This new culture has been defined as raunch culture as we have adapted to and have started to emulate celebrities we deem worthy. The reasons for the emulation are the success and of these celebrities as many
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Media & Society Assignment 1 Why the media matter and why critical engagement with the media is necessary. Use your chosen point of focus (e.g. political economy) to argue for the importance of having a critical understanding of media. Why should we be concerned with media ownership and concentration? Why should we care about the ideologies the media perpetuate? Try to relate your arguments to solid‚ practical examples. Media are “…technologically developed communication industries‚ normally
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Use of differential‚ selective and enriched media: EMB‚ blood and starch agar. OBJECTIVES: distinguish between different bacterial species based on colony morphology on agar plates To distinguish the growth characteristics of microorganisms in various differential‚ and selective media. Differentiate bacteria based on their ability to hydrolyze starch. Materials: Plates of EMB‚ Starch and blood agar. Stool sample. Inoculating loop. Bunsen burner. Soil sample. Cotton soap. Skin
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produce good glowing in the SWC agar media compared to the LA agar media. In LA agar media‚ the production of light was very deem. It also took much time to solidify and the agar media was too soft and forms hole‚ therefore good streaking couldn’t be done. There might be error in the composition of the LA agar media ingredients. However‚ when SWC agar media used‚ there was good growth of bacteria and bright production of light. When comparing both media‚ the SWC media contains 10ml of Glycerol whereas
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Agar From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Not to be confused with auger or augur. For other uses‚ see Agar (disambiguation). Culinary usage Mizuyōkan - a popular Japanese red bean jelly made from agar. Scientific usage A blood agar plate used to culture bacteria and diagnose infection. Agar or agar-agar is a gelatinous substance derived by boiling[1] a polysaccharide in red algae‚ where it accumulates in the cell walls of agarophyte and serves as the primary structural
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Kaur Pure Cultures Lab 1/31/13 Introduction : Pure cultures are made of only one type of organisms and can be used to study their properties. A method used to isolate pure cultures is making a steak-plate‚ which is a dilution process in which culture is spread over an agar plate in a certain manner. Using a loop rod‚ culture was taken from the tube and dragged across area 1 several time‚of the agar. The agar was then turned 90º‚ and the loop was flamed and cooled. Taking some culture from
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1. Obtain 1 gram of an impure‚ unknown substance solid. Make sure to stir the mixture before measuring the sample; record the mixture’s code in the data section. 2. Add approx. 25-50 mL of water and several boiling chips to a 125 mL Erlenmeyer flask and heat the water to a gentle boil using a hotplate. 3. On a second hotplate‚ place a 125 mL Erlenmeyer flask containing the one gram of unknown solid along with a boiling chip. 4. Using a ring clamp‚ slowly pour approx. 5-10 mL of boiling water into
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DIFFERENT TYPES OF AGAR Mac Conkey‘s Agar plate MacConkey (also McConkey) agar is a culture medium designed to grow Gram-negative bacteria and stain them for lactose fermentation. It contains bile salts (to inhibit most Grampositive bacteria‚ except Enterococcus and some species of Staphylococcus)‚ crystal violet dye (which also inhibits certain Gram-positive bacteria)‚ neutral red dye (which stains microbes fermenting lactose)‚ lactose and peptone. QUALITY CONTROL Results after 24 hrs at
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