Gram-negative bacteria

prokaryotic bacteria E. coli. In topic one IB requires that we learn about Eubacteria, traditional bacteria that are typically pathogenic, E. coli fall into this category. We also had to learn about Florey and Chain experiments, which is where I learned about zones of inhibition. The problem interests me because is important that one knows which cleaning product to use in one household to get rid of the most bacteria. The idea is that if one test the most affective cleaning product on bacteria…

understand what this species is capable of. Throughout a general basis of identifying an unknown species we must figure out either it will become a gram-positive or gram-negative type of bacteria and in doing so we must do a gram staining method. This method works because it will direct us to what test we can do next based off either it is negative or positive bacteria, which is exactly what I had done for my unknown. These experiments are not just done without a reason; on the contrary, it is…

several types of antibiotics that have a structure similar to that of a crown ether and one antibiotic that has a structure similar to crown ether would be gramicidin. Gramicidin works against gram-positive bacteria but it doesn’t work against gram-positive bacilli. It also works against select gram-negative organisms. In the year 1939, René Dubos discovered the gramicidin antibiotic.1 Gramicidin contains a mixture of three antibiotic compounds, gramicidins A, B and C and with its discovery it…

Burkholderia pseudomallei also called as pseudomonas pseudomallei is an intracellular gram negative bipolar staining aerobic motile shaped rod with a safety pin appearance when seen microscopically measuring 25 micro metre in length and 0.4 -0.8 micro metre in diameter . It is capable of self population using flagella. In vitro , it requires a temperature of 40 degree and grows in an acidic environment fermenting glucose and galactose . It produces both exotoxin and endotoxins. It causes…

inhibiting bacteria. This result however, does not signify that natural remedies are inadequate at inhibiting bacteria. It reflects that natural remedies are ineffective in inhibiting gram-positive bacteria. First natural product: Saliva for instance, is one of the body’s many defence mechanisms. Its main function is to prevent adhesion of bacteria to oral surfaces. This means that saliva does not specialise in killing bacteria. Research has indicated that saliva have anti-bacteria property…

When finding out unknown bacteria you have to go through several steps to figure out what it could be. I was given unknown bacteria number 28 and asked to run different testing to identify exactly what this bacterium is. I ran 6 test to determine my unknown. These test includes: Gram Stain, SIM, Sucrose, Citrate, MAC, and EMB. Each one of these test are different and they will give a positive or negative feedback which is how we will know which bacterium I have. A gram stain is one of the most…

ferric chloride was added to phenylalanine deaminase tube, it turned into army green color( positive result) which indicated that unknown microorganism contains phenylalanine deaminase enzyme. On the other hand, no color change in the slant indicates negative result for this test. The choices between two…………………. was narrowed down By performing this test. The positive result for phenylalanine deaminase indicated the unknown microorganism #404 is P.vulgaris. To check motility of an unknown…

1.Introduction: Background/Aim. 1.1 Nature of the microorganism: Enterococcus faecalis was placed under group D streptococci because of similar lysis characters; Identified as Gram positive, non-motile, anaerobic fermentative, lactic acid bacteria; are commensal inhabitant of intestinal bacteria and opportunistic pathogens. They occur singly or in pairs or chains. 1.2 Economic importance: Enterococcus faecalis is also used as a probiotic for production of Mediterranean cheese and meat products…

microbiology lab requires a unique environment & special practice. Then this report contains information about various kind culture media and there preparation which is essential for the culture plating detection of various microorganisms and bacteria There is information about various kinds culture plating techniques like streak plate method and pour plate method and discuss Urinary tract infections (UTIs) are among the most common bacterial infections and account for a significant part of…

medium used to identify lactose-fermenting coliforms. This medium is typically used to test dairy products and water. The medium contains lactose which acts as a carbohydrate source, bile salts and crystal violet that act as an inhibitory agent towards gram-positive microorganisms and neutral red is added to serve as a pH indicator, microorganisms lower the pH which results in the colonies turning red. Some of the organisms that grow on this medium are: Escherichia coli ,Enterobacter aerogenes…