In this experiment, we wanted to investigate which surfaces in the school had the most bacteria, and we thought that the surfaces used more would have the most bacteria. For this experiment we used agar plates, cotton swabs and distilled water in order to see how much bacteria was on each surface. Cotton swabs were wet with distilled water and then the swabbed ws wied on a 2 inch space of the surface and twisted to cover the entire swab.once we swabbed the surface, we wiped the swab on the plate in a zigzag motion holding it upside down. The girls bathroom sink handle had 389 bacteria, and the boys bathroom by the football field had 0. We saw that places commonly used such as the bathroom sinks, door handles and railings contracted the most bacteria.
The key issue is to determine when Oxyglobin should be introduced to the market without jeopardizing Hemopure’s potential and how it should be marketed.
1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points)
|EMB Agar | |Distinguishes bacteria that ferment |Dark blue colonies with|E. coli and P. |
BSP, S. (2010). How is EM different from light microscopy? Retrieved April 25, 2015, from http://bsp.med.harvard.edu/node/222
The purpose of the bacterial unknown independent study experiment completed throughout the course of this lab was to determine the identity of an unknown bacterial species. The unknown bacteria sample was chosen from numerous samples provided by the instructor. The starting unknown sample, unknown #15 was a mixed bacterial culture and a broad approach taken to identify the sample. Various biochemical tests were completed to identify the bacterial species along with the use of databases such as Gideon and Bergey’s to compare the test results of known bacteria to the results of the unknown sample. Information was gathered from the other sources and databases and phenotypic testing completed and the results compared to the database results. Aseptic
After many performed test such as the API 20E test strip, motility test, inoculated plates, gram stain, an identification flow chart which began with the results from an indole, MR, VP, and citrate test. This amongst many other test. These results brought the conclusion of my unknown culture to be Escherichia coli, my unknown number was 11.
The objective of this experiment is to identify the organisms of two unknown bacterial cultures. Students must identify the species of the unknown bacteria by utilizing the techniques and information learned in previous laboratory exercises. These techniques include streaking for isolation, Gram staining, and specific biochemical tests. Students are given a map known as a dichotomous key, a guide in determining the identity of their unknown sample.
A new epidemic disease is on the rise, it is easily obtained but also easily preventable with the proper care of maintenance. Many people suffer from a common disease know all around the world as tooth decay. Its scientific organism name is known as Streptococcus mutant. Not only will I discuss how it can develop but also where it originated from and to inform what are some options to help maintain proper dental care if diagnosed with it and help prevent it before it forms. Whether it’s occurs genetically or physically. This will also inform how the smallest things from too much candy, to not enough flossing can lead to a painful infection or a painful budget.
Entering human body is not easy. The bacteria and other harmful materials can enter human body either via food or cuts and injuries on the skin. However, there foreign agents are not always welcomed in the human body. There are immune cells that fight harmful agents. The immunity system in the human body identifies harmful microbes like bacteria, viruses, and others and provides defense to the body against these substances. There are antigens present in viruses, fungi, or bacteria and these antigens are normally proteins or toxins, chemicals, drugs, etc. that show the presence of foreign harmful agent. The immunity system of man identifies these antigens and fights the microbes producing them.
In 1998, Biopure Corporation is one of the three legitimate contenders in the emerging field of “blood substitutes”. Biopure has invested $200M on the R&D on blood substitutes in the past with its primary goal being the development of a human blood substitute ( Hemopure) but Its entry into animal market (Oxyglobin) had been some
Introduction: Through the conduction of numerous experiments, the identity of two bacterial isolates was determined. The tested specimen was an unknown sample of a mixed culture of two different species of bacteria. The first step that was taken was obtaining a pure culture of each species of bacteria by isolating one species from the other. Once isolation was complete, the isolated cultures were tested using procedures that had been performed during previous lab sessions. A gram stain was performed on the two isolates. The isolate which had tested gram negative was then tested for the presence of cytochrome C and lactose fermentation. For the gram positive isolate, cell shape was determined and a catalase test was performed.
Prokaryotic Cells All living things are made of cells, and cells are the smallest units that can be alive. Life on Earth is classified into five kingdoms, and they each have their own characteristic kind of cell. However the biggest division is
2. Introduction: Each student was given unknown bacteria and was instructed to perform a variety of experimental tests that would help to identify their bacteria. During the process of identification, the unknown bacteria was added to many different testing medias using aseptic technique. They are as follows: lactose fermentation on eosin methylene blue (EMB), TSI (Triple Sugar Iron agar), Phenol red sucrose, the SIM test, H2S by SIM, IMViC (indole, motility, voges-proskauer, and citrate), Urease (urea broth), PDase (Phenylalanine Deaminase), Lysine Decarboxylase, and Ornithine Decarboxylase. Colonial morphology on EMB was used to
The law proves that natural selection is necessary for evolution to occur ("SparkNotes: population genetics," 2014). The conditions set up by the Hardy-Weinberg Law allow for variability (the existence of different alleles) and inheritance, but they eliminate natural selection ("SparkNotes: population genetics," 2014). The fact that no evolution occurs in a population meeting these conditions proves that evolution can only occur through natural selection ("SparkNotes: population genetics," 2014). The Hardy-Weinberg Law allows us to estimate the effect of selection pressures