Catalase

Introduction The United States goes through many crises, but one in particular is the antibiotic resistance crisis.When a person becomes ill, they will go to the doctor and get an antibiotic, however, this illness may not need an antibiotic, as in a viral infection, or the patient may not take the medication correctly. As a result, antibiotic resistance occurs and can make it impossible to cure that illness in the future. Brad Spellberg, Robert Guidos, David Gilbert, John Bradley, Helen W.…

still possible. Secondly, the amounts of tests performed on the Gram positive unknown led to Listeria Monocytogenes as the only possible candidate. A non spore forming test removed all Bacillus and Clostridium species as a possibility. A positive catalase test removed Lactobacillus species as a possibility. A negative nitrate test removed mycobacterium species as a possibility. And, a positive phenol red arabinose test removed Kurthia species as a possibility. A Blood agar ( Beta hemolysis) test…

In order to correctly identify each organism, a chart was created from Bergey’s Manual of Determinative Bacteriology that incorporated all known biochemical test results for each of the thirteen possible organisms. The thirteen organisms were separated into three separate categories, Gram-negative bacilli, Gram-positive bacilli, and Gram-positive cocci. This table can be found in the appendix (Bergey and Holt, 1994). Based on the information in the chart, the order of biochemical tests…

In late 2015, scientists found that the best borrowers are not, in fact, the characters of the 1997 movie, but microscopic animals called water bears. Water bears, more specifically named tardigrades, are found to have scavenged about 17.5% of their genes from other creatures. This ability to obtain used genes from other creatures’ discarded DNA is found to let tardigrades undergo extreme stress. And not just homework stress. Tardigrades live in water, and have to be submerged to survive.…

can be collected and some key tests that help identify just the genus Streptococcus includes: gram staining, mobility tests, oxidative-fermentative tests and endospore tests. The other tests that help identify the species include: capsule tests, catalase tests, hemolysis tests and pyrrolidonearylamidase tests. (2). The genus Streptococcus is a, gram-positive cocci which ferments sugar, but the final product will always be lactic acid (2). Streptococcus also occurs in pairs or chains, has no…

serovar (7,18).  A bacterium serovar is established by somatic, flagellar, and capsular antigens present in the cell walls (6,7,12,19).  Belonging to the Enterobacteriaceae family S. Typhimurium is a gram-negative rod flagellated, non-sporing, catalase-positive,…

Different types of bacteria have different enzymes, by-products, etc. that can be identified by tests such as the catalase or oxidase test. These help narrow down the possible types an unknown bacteria could be, as the biochemical tests are usually quite specific. For example, if a catalase test is negative, one can almost be sure that the bacteria sample in question is S. faecalis. Biochemical tests are also some of the quickest, which also makes them…

The purpose of the liver lab was to understand how enzymes, more specifically catalase, break down poisonous chemicals, hydrogen peroxide. In the lab we used multiple reactants, temperatures, and pH levels. For the tissues and enzymes we used livers, new, used, cold, warm and boiled, chicken breasts, potatoes, and apples. We also used hydrogen peroxide, warm and cold, acidic and basic, and used liquid from a reaction. Hydrogen peroxide acts as a substrate for the enzymes. The reactants were the…

Bacteria are classified and identified to distinguish among strains and to group them by criteria of interest (1). There are several different procedures that can be utilized to identify a bacterium. This includes the oxidation test, gram stain, and catalase test. The purpose of this lab report is to show the understanding of all procedures used to identify the bacterium, and explain how the given results led to the identification of the unknown bacterium. Cell and colony morphology have been…

The Genus Bordetella Bordetella are catalase positive, asaccharolytic, aerobic, gram positive rods, whose optimal growth is at 35° to 37°C. Disease 1. Species of Bordetella is known to cause respiratory diseases like whooping cough, pneumonia, and sinusitis. 2. There are eight species of Bordetella that cause different diseases including Bordetella parapertussis, Bordetella bronchiseptica, Bordetella avium, Bordetella hinzii, Bordetella holmessi, Bordetella trematum, Bordetella pertussis,…