A patient with stomach ulcers was treated with antibacterial antibiotics for H. pylori infection and the symptoms abate (go away). All of the following apply to H. pylori infections EXCEPT H. pylori infection is associated with fermentation processes and produciton of acid end products H. pylori infection is associated with patient colonization and low iron levels H. pylori infection is associated with flagella that allows the cells to burrow through the mucus layer
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- Mannitol Salt Agar: Is the organism Osmotolerant or non-osmotolerant ______________________________ Mannitol fermenter or non-fermenter: ___________________________ Genus of organism determined from MSA plate: ________________________________For which of the five hydrolysis tests (starch, casein, triglycerides, tryptophan, and urea) would a positive test result be expected for: a. the etiologic agent of acne, Propionibacterium acnes? Explain. b. the etiologic agent of gastric ulcers, Helicobacter pylori? Why would this activity be advantageous in this environment?Select only the exclusive aerobic 4microbial pathways ahead: -Nitrate assimilation O Nitrification -Disproportionation of thiosulfate -Denitrification -Ammonium asimilation -Ammonification -Respiration -Dissimilatory sulfate reduction -Metanogenesis -Methanotrophy -ANAMOX -Assimilatory sulfate reduction -Methylotrphy -Chemolithotrophic CO2 reduction -Photossyntesis -Desulfurylation -Dissimilatory Nitrate Reduction to Ammonium -Atmospheric Nitrogen fixation -Sulfide oxidation by colorless bacteria
- Define the following terms:a. superoxide dismutaseb. peroxiredoxinc. thioredoxind. b-carotenee. ascorbateSuperoxide ion is toxic to strict anaerobes because they lacka. catalase b. peroxidase c. dismutase d. oxidaseTRUE or FALSE. The Enterotube II can only be inoculated using a culture from a nutrient broth media.
- How can this be explained in lamen terms the step by step results of enterobacter aerogenes? DISCUSS all the results. Discuss in a logical and step by step fashion how you concluded that you had a certain microorganism.You need to explain which observation(s) enabled you to identify your unknown microorganism (Enterobacter aerogenes).To convince your reader you need phrases like; This observation “suggested” that my organism is Enterobacter aerogenes This observation “confirmed” that my organism is Enterobacter aerogenesclostridium botulinum is a bacterium usually present in soil that may cause botulism. Briefly explain why one or few cells of a pathogenic bacterium, such as clostridium botulism, by itself typically does not secrete a toxin, despite the species as a whole being characterized as toxin producing.Between Enterobacter aerogenes and Enterobacter cloacae, which are positive or negative for methyl red and Voges Proskauer test results?
- Chopped garlic often contains C. botulinum endospores and iscommonly sold submerged in olive oil, which creates an anaerobicenvironment. What is required to be added to garlic sold in thismanner?a. sodium chlorideb. citric acidc. waterd. A warning label describing the symptoms of botulism.what suggestion do you have pertaining to the management of the diseases: a-KG dehydrogenase, succinate dehydrogenase SDH, and fumarase.It is required to recover active extracellular enzymes from a completed fermentation mediumthat also consists of proteins (<200,000 molecular weight cut-off (MWCO)) and bacterial cells (1-2μm). A cross-flow 0.35 μm microfiltration (MF) with retentate recycled back to the fermenter willbe used over a period of 5 hours during which time flux is assumed to decline linearly. After 5 hours, assuming 95% of the bacteria are retained and given the additionalinformation below, what is the concertation of bacteria remaining in the fermenter and what area,in m2 , of MF membrane is needed? Initial bacterial concentration = 1.2 gdcw /L (dcw = dry cell weight)Volume of medium at the beginning = 15 m3Volume of medium left in the fermenter after 5 hours filtering = 1 m3Initial (starting flux) = 6.5 x 10-5 m sec -1Final flux (after 5 hours of filtering) = 3.9 x 10-5 m sec -