Enterobacteriaceae

Introduction: Klebsiella pneumoniae is a part of the family Enterobacteriaceae. This genus is a gram negative and it has no flagella, which meant that this bacterium is not motile. However, it can move with the use of the current that is produced by the water. This bacterium has the ability to cause destructive change in a man or animals lungs if aspirated. In addition, this is also one of the most contacted pathogen in a Hospital Acquired Infection (HAI) or nosocomial infection. In this…

The Black Death, the bubonic plague, those are two names for the same disaster, one of the worst in recorded history, killing between 1/3 and 1/2 of the population of England, not to mention all the people killed in Asia and Africa. The name bubonic plague is a misconception, there were actually three forms of plague: the Bubonic, the Pnuemonic, and the Septicemic plagues, and they were all caused by the same germ, Yersinia Pestis. Yersinia Pestis, once called Pasteurella pestis1, "is a…

Introduction Antibiotics has changed modern medicine into what we know today, saving many lives and alleviating the suffering of individuals [1]. Around the 1940s, the use of penicillin and streptomycin effectively controlled the prevalence of bacterial infections, dramatically improving life expectancy [2]. However, antibiotic resistance started to evolve and there is a constant demand for the development of new compounds as the lifespan of pre-existing antibiotics is significantly reduced [3]…

S. aureus was first isolated by Alexander Ogston. Ogston described the bacteria, which he isolated from pus collected from surgical wounds, as micrococci (Thomer et al., 2015). This description was given because of the sphere-shape of the bacteria and the grape-like clusters that they form. After Ogston’s discovery, Friedrich Rosenbach differentiated between two staphylococci bacteria, which were isolated from humans (Thomer et al., 2015). These bacteria were named S. aureus and S. albus. This…

Unknown Bacteria 228 Adisney Pino Professor Dowding Miami Dade College Section T/R 7:05PM Introduction Enterobacter aerogenes is rod-shaped bacteria that belongs in the family of Enterobacteriaceae. This rod-shaped bacterium is gram negative which makes it a facultative anaerobe which grew perfectly in 37-degree temperature. This species was motile and therefore it can synthesize an enzyme known as ornithine decarboxylase. This bacterium is prevalent in the intestines of animals…

complication along with envenomation. A very few microbiological data available on snakebite generated wound infection, a wide range of microorganism suggested including predominant aerobes viz. coagulase negative Staphylococcus aureus, Enterococcus, Enterobacteriaceae family species and anaerobes including Clostridium species. In light of the defined organisms, many authors had driven the work to find out the actual micro biota of snakes in many parts of the world. In view of the severity of…

Ruth Ella Moore is a remarkable woman that has contributed greatly to society, yet has received little to no recognition. Moore was born in Columbus, Ohio on May 19, 1903. She achieved distinction when she became the first African American woman in the United States to earn a Doctor of Philosophy in the natural sciences (Brown, 2007). Her academic achievement was significant because her minority status was combined with an era of social prejudices against women in educational and professional…

Structure of the Bacterial Cell Wall Bacterial cells differ from mammalian cells due to highly developed cell walls outside the cytoplasmic membranes that provide structural integrity and shape to the cell. Bacteria live in dilute aqueous environments, which causes an intracellular pressure equivalent of 10-25 atm. Without the structural support of the cell wall, the cell is susceptible to lysis and osmotic rupture due to osmotic rupture due to turgor pressure. Figure 1: Comparison between…

The Carbohydrate Fermentation Test measured the ability of the bacteria to ferment glucose and mannitol carbohydrate and produce gas. Majority of microorganisms obtain energy from either aerobic or anaerobic respiration, or through fermentation. The different types of fermentation pathways used by bacteria can aid in differentiating them among groups or species of bacteria because each pathway depends on the complement of enzymes available for the cell (Department of Biological Sciences, 2015).…

Throughout the semester in the microbiology lab we have been taught how to conduct multiple experiments to identify microorganisms. Many of these experiments can be used on all different types of microorganisms but cumulatively they can help isolate a singular microorganism’s identity. At the beginning of the semester we were divided into several groups and were assigned an unknown of which we were tasked with identifying. Being assigned number 14 as our unknown, my group consisting of…