Pseudomonas Aeruginosa The purpose of this lab was to identify the unknown bacteria culture given by our respected instructor using various differential tests. The identification of this unknown culture was accomplished by separating and differentiating between possible bacteria based on specific biochemical characteristics. Each test was used in a way to help recognize those specifics and bring us one step closer to identify the unknown cultures. The differential tests used to identify the unknown cultures were oxidase, lactose and glucose fermentation, citrate, indole, urease, motility, H2S, EMB and MAC. The tests performed on the unknown bacteria culture were all used to determine and identify the bacteria.
These being, E.Coli and S.Albus. Some of the developed antibiotics work on all forms of bacterial life, this means destroying of all bacteria it gets in contact with. Some act on a range of bacterial life, giving us the answers to which affect and do not affect the bacteria. Lastly some do not have any affect on the bacteria at all. In order to find out which antibiotics work on the bacteria, doing an agar plate test is the best way to get answers.
Botulism Julie L. Crabb 10/25/2013 Microbiology Madera Center Abstract This research paper is about botulism. Botulism is a very rare but serious disease that is caused by the bacterium called Clostridium botulinum. (Chaudry, 2011, para. 1-5) This type of bacterium occurs in the soil. There are three main types of botulism: 1.
Review Sheet Week 8 Exercise 21.5 Questions 1. Morphology and culturing. Pneumococci are Gram-positive, oval to lancet- shaped cocci that usually occur in pairs or short chains Morphology refers to an organism's structure, form and appearance. Gram stains allow for better viewing of bacterial cell structure 2. Alpha hemolysis 3.
| Practical Report | | | | Practical Report Introduction This specific experiment will demonstrate both the efficiency and the disinfecting capabilities of the various disinfectants used and if the experiment is followed correctly the results deemed should be noted that if the substance possess a chemical substances that inhibits the growth of the bacterial culture placed onto the agar (E.Coli) that inhibition zones will be created and we can tabulate and record the observation thus walking away with an understanding of the efficiency of the tested disinfectants used and their success rate. What is known about E.Coli is that it is normally found in food it is a Gram negative, rod shaped bacterium that can help the body break down and assists the body in digestion of food (Dowshen, 2009).Although certain strains of the E.Coli are pathogenic to humans such as the serotype O157:H7, this specific strain of E.Coli is known to cause food poising and can escalate and become life threatening (Nordqvist, 2011). Domestos is chlorine based bleaching agent (Directa, 2009) and is a common household cleaning substance that is used. Handy Andy is a common and popular general house hold cleaner. Dettol is trusted antiseptic and disinfectant and is widely used to fight unwanted bacteria (Thompson D. M.) It has a distinct and characteristic phenolic odour.
This kind of Staphylococcus aureus is called “MRSA”, referred to methicillin-resistant S. aureus. This bacteria are multi-resistant to beta-lactam antibiotics, meaning that they are resistant to different kinds of antibiotics, such as penicillin, methicillin, dicloxacillin and cephalosporin. As the process goes, that normal Staphylococcus aureus are being killed by penicillin antibiotic, and the ones that are resistant survived and keep on reproducing, Staphylococcus aureus bacteria that is penicillin resistant spread in the community and its amount kept on increasing. This made natural selection to occur, which the bacteria that are antibiotic resistance are suitable ones and they survived in
Escherichia Coli is a large, diverse group of bacteria of the Enterobacteriaceae family. A German physician named Dr. Theodore Escherich discovered it in 1885. The genus is composed of gram-negative, aerobic, facultatively anaerobic, non-spore forming rods. The organism’s usual habitat is the digestive tracts of humans and animals. Escherichia Coli is a beneficial function in the human body because it synthesizes useful vitamins such as Vitamin K. E. coli also acts as competition in the intestine by suppressing the growth of pathogenic bacteria that may be present or ingested.
Abstract The purpose of this experiment was to investigate if Artemia salina is a good bioindicator for toxins in their environment used to detect pollution. Brine shrimp have a high tolerance for changes in their environment. Shrimp were exposed to varying concentrations of ethanol to test their tolerance level and determine the viability for the crustaceans. Four petri dishes of each concentration were used, as well as four dishes of a control that only contained brine water. Three hundred brine shrimp were placed in each petri dish for each of the controls and ethanol concentrations.
Chloramphenicol is also extremely useful for treating infections of the eyes. This medication is also important to biological research, as it is used in the lab to better understand protein synthesis by viewing the process with Chloramphenicol. b. )Linear Function for Determining Dosage Using the slope-intercept form, y = mx+b, and plugging in the variables, we are able to determine the dosage needed for a patient, according to his/her weight, in pounds. The linear equation necessary to determine dosage is: y = 5.67 x + b.
Biology Lab Report Bacterial Colonies in Your Environment Purpose The purpose of this lab is to culture, examine and describe microorganisms (bacterial colonies) from sources in daily surroundings that we are exposed to. Variables and Controls The independent variable was the places we decided to swab for bacteria. The dependent variable was the types of bacteria that grew within the agar plate The controlled variables were the temperature in the sir, how tight the agar plate was sealed and how much food was in the agar plate. Materials -a sterilized agar plate (with lid) -markers -soap and water -clear tape -sterile cotton swabs Lab Safety In this lab we needed to wash our hands constantly before and after the lab. We were dealing with bacteria that has the ability to be harmful and to avoid illness/sickness we need to thoroughly wash our hands and be careful around the bacteria.