Gram-negative bacteria

The identification of bacteria is a fundamental objective of microbiologists. It is essential to distinguish specific bacterial properties to understand the environment, physiology and disease. As new bacterial species emerge and existing ones evolve into different strains, it is imperative that microbiologists continue to isolate bacteria from the field, identify their findings and research newly discovered forms. Their discoveries can then be used to evaluate the types of microbial life that may

of this particular bacteria. This can be justified as S. albus is gram-positive; easier bacteria to kill, developing resistance slower than a gram-negative. Therefore, the highest concentration of antibiotic should be – and was – the most successful in changing the pH levels, and killing S. albus. Through discussion and analysis of the results collected through the experiment, it can be concluded that there is higher chance of killing and the growth of this particular bacteria if 100% Dettol is used

Resistance To Antibiotics Grows,” written by Lena Sun. According to the article, Neisseria Gonorrhoeae is a drug-resistant diplococcal (coffee bean-shaped) bacteria, which causes gonorrhea and is the second most common infectious disease in the United States. This bacteria is only found after sexual contact with an infected person after the bacteria attach to the nonciliated epithelial cells of the fallopian tube, they are surrounded by the microvilli that draw them to the surface of the mucosal cell

Enterobacter aerogenes is a species of rod shaped gram negative bacterium in the family of enterobacteriaceae. It is a facultative anaerobe, meaning that it can grow in either the presence of oxygen or in the absence of oxygen. It also uses fermentation as the means of gathering energy that protect it from reative oxygen species, and allowing it to live in oxygenated environments. Enterobacter aerogenes is a nosocomial and pathogenic bacterium that cause opportunistic infections. The majority are

carried out in this report testing for microbial growth against different environmental factors. Good aseptic techniques were used to prevent contamination, resulting in a uniform set of results that are in line with the literature. Introduction Bacteria vary greatly in terms of their characteristics and morphology. Colonies can be classified according to their colour, form, elevation, margin and size. Pure cultures of microorganisms

The unknown bacteria B22 contained an opaque white, circular colony, along with an irregular margin on the initial inoculated agar plate. The broth characteristics included growth with the presence of a flocculent and all around cloudiness; however, the slant characteristics included just a spreading edge. After the bacterium identified to be gram positive, a blood agar plate identified the bacteria to have gamma hemolysis capabilities; additionally, the mannitol salt agar identified the bacterium

Essential oil mouth rinses Essential oils are often used to kill bacteria, reduce inflammation, and cleanse.... phenolic compounds include essential oil constituents that have some antibacterial properties Phenolic compounds. Of the antiseptic agents , phenols have been in clinical use the longest and have been available worldwide for over a century with minimal adverse effects reported. Listerine is a com- mercially available OTC phenolic compound. The orig-inal Listerine formulation was tested

I was given unknown 18, after the gram stains and biological tests I concluded that unknown 18 is Serratia marcescens. S. marcenscens is a rod shaped, motile, gram-negative bacteria, it was first isolated in 1819 by Italian pharmacist, Bizio. The S. marcenscens first isolated came from polenta that was taking on an unusual bright red color. Initially S. marcenscens was believed to be nonpathogenic and was commonly used as a biological marker because of its unique red color (Merlino, 1924). It was

identification of the unknown organism was first tested using a Gram’s staining procedure. This test uses a series of dyes and liquid solutions that give a bacterial smear a color contrast and aid in its identification. This method differentiates bacteria based on the thickness of their peptidoglycan composed cell walls. This Gram’s staining test was initiated by first donning gloves and obtaining a clean microscopic slide which was cleaned with alcohol. The slide was then marked with a culture number

One of the most common bacteria known to man is affiliated with the genus Staphylococcus. Staphylococcus aureus can be described as bacteria that present as gram positive cocci either in pairs, tetrads, short chains or irregular grape like clusters (2A). With their diameter ranging from 0.5 to 1.5 um, other characteristics that comprise this bacteria include their non-spore forming ability and nonmotile ways (2A). Defined as facultative anaerobes, these microorganisms are usually encapsulated(2A)