that falls, and the bacteria that get you sick may both be small, but when you allow them to accumulate, you can see characteristics of them. While snow is made from frozen water, with flakes differentiating in the structure of them, bacteria is like that. Certain bacteria families may have similar genomes, they do have slight differences that make up what they are. One way to tell the difference is to see if the bacteria is gram positive or gram negative. Gram-Positive bacteria contains peptidoglycan
Serratia marcescens Susceptibility to the Antibiotics Streptomycin and Ampicillin Rileigh M. Jones Biological Sciences Student, Cornell University, Ithaca, NY-14853-2401 e-mail: rj246@cornell.edu Abstract-The gram-negative bacteria Serratia marcescens has gained attention in recent years for its tendency to cause nosocomial infections in humans, as well as its development of antibiotic resistance. Antibiotic resistance in a bacterium that is harmful to humans can be concerning as it can result
unknown bacteria was using several different microbiology lab techniques including an API test, an oxidase test, a gram stain, a hanging drop slide, and morphology identification. The unknown bacterium, which was contaminated with Serratia marcescens, was isolated by streaking the bacteria solution to single colonies. The isolated unknown white bacteria, had the appearance of circular form, convex elevation, entire margin, elongated cocci. The tests than showed that the bacteria was gram-negative, non-motile
(LPS) of gram-negative bacteria in the outer leaflet of the outer membrane is Lipid A. This component is produced within the bacterial cell cytoplasm through the Lpx biosynthetic pathway (reference). Lipid A is then transported to the outer membrane (OM) via the Lpt biosynthetic pathway (reference). Lipid A is highly conserved, essential for virulence and bacterial viability. These qualities make it an attractive drug target which could aid in the development of inhibitors of gram-negative bacteria
Kelvin Tsang 201340486 Cystitis Aetiology of the disease – 214 words Discussion of the presumptive diagnosis – 890 words Discussion of the selected antimicrobial therapy – 239 words Summary – 72 words Total word count – 1415 words This report is entirely my own work. Any quotations taken from others have been declared and referenced in the text. 19/11/2014 Aetiology of the disease Cystitis is a bacterial urinary tract infection and occurs when bacterium enters the urethra
Summary Mastitis is a condition affecting dairy cows that has significant impacts on producers, processors and consumers. The disease causes a reduction in milk yield and quality, as well as contributing to antibiotic use and the development of resistant bacterial strains. Mastitis can also increase the susceptibility of an affected cow to secondary health issues due to immune suppression caused by the infection. Physiological, environmental and management factors can all increase the risk of a
microorganisms co-exist with life on Earth; most of them as inhabitants among plants or oceans, many as normal flora in humans, and some in remote locations in the most extreme habitats. Despite being ubiquitous in nature and typically harmless, bacteria get particular attention for causing disease in humans. Correct identification of a microorganism allows for proper investigation of a particular species, and prevention or treatment of a disease if necessary. During lab, students were instructed
can occur from enzymes produced by the bacteria, (Caldas, Herron, La Mota-Peynado, Wong, and Trowbridge, 2017). To test the production of enzymes that can lysis red blood cells we used sheep’s blood agar which is an enriched medium with five percent citrated sheep’s blood, (Caldas, Herron, La Mota-Peynado, Wong, and Trowbridge, 2017). By streaking and using a stab technique which allows us to test our species reaction with less oxygen, to differentiate gram-positive cocci species. Alpha hemolysis
at the answer is stated. A short paragraph explaining how the results are presented can be included. Example: Unknown G had the following morphology on a TSA plate: medium sized opaque cream colored colony. After determining that it was a Gram negative rod, an oxidase test was performed and it was inoculated into a BCP lactose tube
Summary The article I chose to summarize discusses many different ways to control antibiotic resistance. I thought it was a good article for me to read so I can adapt some of these strategies in my practice as a nurse practitioner. Healthcare has been forever changed with the discovery of antibiotics. Although considered one of the biggest discoveries in the last century, there has been less work done to create new antibiotics in more recent years. Once antibiotic use became widespread, resistance