Negative campaigning

Effect of different cleaning products of the growth of K12 strain Escherichia Coli? Which household cleaning product (hydrogen peroxide, Pine-sol, Clorox Bleach, Mr Clean antibacterial liquid cleaner) is the best inhibitor of K12 Escherichia coli (E. coli) growth? The manipulated variable was the cleaning product or disinfectant on used of the Whatman antibiotic assay paper disc. The dependent variable is the zone of inhibition of the prokaryotic bacteria E. coli. In topic one IB requires that…

catheter specimen it is collect from the catheter and not from the collection bag. Most of these stains are lactose negative and they demonstrate typical features swarming in motility on agar plates. According to Smith (1993) swarming is the spreading of Proteus…

The “Paradoxical Era”, named by policy scholar, Bruce Jansson, refers to an era in which many reforms in social welfare were enacted under President Nixon. Nixon was not known as an advocate of social reform and looked at social welfare in retrospect from a social reform standpoint. Jansson notes that the Paradoxical Era was a period of: “conflicting tendencies…a transitional era between the reformist period of the Great Society and the conservative presidency of Ronald Reagan” (Jansson). Nixon…

The drug selected for study is Gentamicin. Gentamicin is an aminoglycoside antibiotic composed of a mixture of related Gentamicin components and fractions and is used to treat many types of bacterial infections, particularly those caused by Gram-negative organisms. Isolation and Preliminary studies 2 demonstrated that it is a mixture of basic, water soluble antibiotic containing the aminocyclitol 2-deoxystreptamine and two additional amino sugars. Chromatographic separation of Gentamicin…

3. I chose the plate with dilution factor 10-7 to count. This was the only plate that yielded an appropriate CFU, therefore, it was the sample with the highest countable colonies. The plate with the dilution of 10-6 yielded Too Many To Count (>300) while the plates with dilution 10-8 and 10-9 yielded Too Few To Count (<30). 4.If I were to do a total count on this sample, as opposed to a viable count, the total count would be higher because it accounts for all cells, not just visible and…

How does the location of a body part effect the bacteria population present on the said part? What has more bacteria the inside of a person's mouth or a person's index finger? My biology class is learning how to conduct experiments, and last week for our experiments we were broken into groups and given instructions to swab any two different objects. After swabbing our two objects, we were then suppose to wipe each swab onto a divided petri dish in order to see which object had more bacteria.…

There are bacteria everywhere. Bacteria is on everything that we touch, eat, and is in our own bodies. We cannot see them with just the naked eye, it takes a microscope to be able to see them. Even though they are visible through a microscope, it is not possible to tell what they are. Two ways that we can identify bacteria is by using agars and staining. The agars that are used in this lab are eosin methylene blue agar (EMB), mannitol agar, and nutrient agar. Mannitol agar is used for…

bacterium was also plated on a MAC plate, which is both selective for gram-negative bacteria and differential as well. On the NA plate, bright red colonies were present; on the MAC plate there was bacterial growth as well, but no color change was observed. This lack of color change on the MAC plate indicated that the bacteria did not ferment lactose. A Gram stain was then performed to confirm that bacteria #12 was indeed gram-negative and also showed that it was rod shaped. Following the…

both yellow and other florescent pigment as their morphology. The organisms in this genus can also be oxidase positive or negative. In the same genus, some organism can convert glucose to acid and some can’t; and some can reduce nitrate while other can’t. It lacked the result for Indole to tryptophan. Although the test for Pseudomonas are mutual to both ends (positive and negative) for most test, there is still possibility that the unknown can be from this genus; therefore, it can’t be omitted.…

The aim of this experiment is to identify and classify of an unknown bacterial isolate. Morphological and Biological test were preformed to identifiy the isolates characteristics. The following characteristics were tested: gram-stain, motility, morphology, hemolysis, lactose fermetation, mannitol fermentation, osmotolerance, aesculin hydrolysis, starch hydrolysis, gelatine hydrolysis, amino acid decarboxylation, lipid hydrolysis, lactose fermetation, casein digestion, catalase enzyme production,…