of bacteria and how they stain‚ whether it be gram positive or gram negative. Hypothesis: If I read the textbook and use the resource websites‚ then I will be able to better understand prokaryotes and describe the structural characteristics of viruses. By understanding prokaryotes‚ I can compare them to eukaryotes and learn more about the different types of prokaryote species. Experiment: Materials: Campbell Biology Textbook Lab 2 Prokaryote packet Website for gram stains: http://learn.chm.msu.edu/vibl/content/gramstain
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4. Procedures 5-6 5. Results 7 6. Discussion8-9 7. Conclusion 10 8. Acknowledgments 11 9. Bibliography 12 10. Appendix 13 11. Forms 14 Introduction The type of bacteria found in milk can help society in many ways. For example‚ if testing goat’s milk‚ sheep’s milk‚ skim milk‚ and two percent milk‚ and the results are similar‚ and then the basic structure of the milks DNA is similar. This conclusion can come in use when products are being tested on cows‚ sheep‚ and
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experiment. The microbes under the microscope were drawn out and labelled. In conclusion‚ different staining techniques are used to determine the presence of certain exterior structures of the bacteria like the cell envelope or just to identify the basic shape and size of the microbe. In this experiment‚ the microbes E. coli‚ Bacillus sp and an unknown microbe from petri dish 1 were categorised as gram negative or gram positive and their shape was identified. These staining techniques are the correct
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methods that have been learned so far in the microbiology laboratory class for the identification of an unknown bacterium. II. Results Unknown A a. The unknown is a gram negative bacilli Upon performing a gram stain on a colony from a streak of the unknown bacteria‚ at 100x‚ the bacteria stains negative for the gram stain. In addition‚ the structure of the bacteria is bacilli. b. The unknown is a facultative anaerobe A small amount of bacteria was added to a tube of fluid thioglygollate
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McGraw Hill). Changes in protocol or interpretation are noted where they were implemented‚ but strict adherence to the manual prevailed. Materials and Methods: Microscope‚ incubator‚ and deionizer functioned correctly throughout testing period‚ with stains‚ dishes‚ agars‚ and test reagents readily available. Lab procedures are considered orthodox and usage thereof is noted chronologically. 3/15/05 We obtained a 24 hour old stock broth culture of the unknown specimen 16. It appeared turbid‚ reflecting
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to distinguish and indentify an unknown bacterium. There are several tests that can help one eliminate and narrow down the options. The most useful test‚ and the very first one done‚ is a gram stain. This test will tell whether the bacterium is gram-positive or gram-negative. After the type of gram stain is identified‚ the tester has a wide array of differentiating tests at their disposal. Based on the results from these tests‚ and the numerous others that are available‚ one can accurately establish
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Year Author Study Population Research Design Statistical Treatment Brief conclusion Limitation/Biases 2007 Eliana Ferreira Ozela‚ Paulo César Stringheta‚ and Milton Cano Chauca Anthocyanin in spinach vine (Basella rubra) fruits Experimental t-test In conclusion‚ the pigment extracted from the fruits of spinach vine (B. rubra) was more stable at pH 5 and pH 6. Increases in temperature and the presence of light affected the stability of this pigment. Results demonstrate that this pigment exhibits
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Bacillus are also spore forming. When gram staining a Bacillus sample‚ they are found to be gram positive. However‚ there are some Bacillus that are gram negative. Escherichia are similar to Bacillus‚ in that they are rod shaped‚ but they are non spore forming. The significance in this is that Bacillus spores can infect up to hundreds if not thousands of years after they were produced‚ as they are harbored in soil. Most Escherichia are motile by flagella and are gram negative Mycoplasma are the smallest
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Robert Suran May 1 2013 Microbiology Abstract Over a three week time span I was able to successfully identify an unknown microorganism by combining the results of several tests. The first test was the Gram stain test which showed the microorganism was Gram positive and rod shaped. Using an Unknown Identification Flowchart‚ I proceeded to inoculate a Starch plate. In week 2‚ I analyzed the Starch plate and was able to determine that the results for Starch Hydrolysis were negative
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AIM: THEORY: Page No: C1 Date: To Gram stain the given bacterial suspension and to differentiate between gram positive and gram negative organism. Visualization of microorganisms in the living state is very difficult‚ not just because they are minute‚ but because they are transparent and almost colorless when suspended in an aqueous medium. To study their properties and divide microorganisms into specific groups for diagnostic purposes‚ biological stains and staining procedures‚ in conjunction
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