ph Minimum Optimum Maximum Escherichia coli 4.5 7 9 Pseudomonas aureus 4.5 7.5 9.5 Staphylococcus aureus 6.8 Listeria monocytogenes 4.5 7 9.6 Make a discussion on the experiment of the effect of pH on microbial growth.
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- 53. Which one of the following bacteria group CANNOT survive in presence of oxygen? Group of answer choices obligate aerobes obligate fermenters facultative aerobes anaerobes microaerophiles aerotolerant 54. Identify the MISMATCH pair from the following, Group of answer choices E.coli :::: facultative aerobe group Bacteroides :::: obligate anaerobes none of the above is a mismatched pair Chlamydia sps :::: cell culture for cultivation Gardnerella sps :::: bacterial vaginosis Staphylococcus sps :::: can tolerate 20 % salt; cause pimples Rickettsias :::: obligate intracellular parasitehttps://courses.lumenlearning.com/microbiology/chapter/controlling-microbial-growth/ Read this Article about Controlling Microbial Growth and answer the following questions: Which is most effective at removing microbes from a product: sanitization, degerming, or sterilization? Explain. What are two possible reasons for choosing a bacteriostatic treatment over a bactericidal one? Name at least two factors that can compromise the effectiveness of a disinfecting agent.Explain how bacteria can become resistant to ampicillin. Be sure to mention the following terms: peptidoglycan, beta lactamase, transpeptidase, beta lactam.
- Choose the False statement regarding mechanism of protease? 1. Cysteine proteases perform covalent catalysis, using third group of cysteine as a nucleophile. 2. Serine, threonine, and cysteine proteases all perform covalent catalysis. 3. Metalloproteases and aspartate proteases perform noncovalent catalysis. 4. HIV-1 protease is an aspartate protease and a target of anti-HIV therapies. 5. In metalloproteases, a metal ion cofactor changes the state of oxidation.Escherichia coli O157:H7 is a foodborne pathogen and can cause serious illness in humans by producing toxins that can severely damage the lining of intestines and kidneys. What are the oxygen requirements of coli? What result would you observe in the MTM agar deep test? Explain. Research on the growth requirements of this bacterium is required. What is the role of oxygen and cytochrome c oxidase in aerobic respiration? Why does the nitrate reduction tube turn red after the addition of zinc? Clostridium tetani is a common soil bacterium and causes tetanus. Would you expect tetani to possess the enzyme catalase? Explain. Research on the growth requirements of this bacterium is required.1). SIM Tubes and TSI slants turn black if the organism is able to reduce iron compounds. For which organism(s) below would you expect a black reaction? Circle all that apply. Escherichia coli. Proteus vulgaris. Salmonella typhimurium. Alcaligenes faecalis. Shigella flexneri. 2). If Citrate is a sugar and fermentation generates an acid, why does the BromThymol Blue indicator in the media turn blue and not yellow? 3). Why is Salmonellosis associated with eggs? Can you get Salmonellosis from other animal sources?
- 1. Clostridium butyricum does not appear to have superoxide dismutase (SOD) and catalase enzymes. How would the growth of C. butyricum in oxic conditions compare to its growth in anoxic conditions? On this basis, what is the aerotolerance category of C. butyricum? 2. Citrobacter freundii is a facultatively anaerobic bacterium. Why would you expect this bacterium to grow better (i.e. form larger colonies) in an oxic environment than in an anoxic one? (as a hint, do some research on the “Pasteur effect”)explanation on how bacteria mycobacterium ulcerans should have the ability to be isolated and grown in pure cultureI U Cardo 12 1三 ニ 三 rI TI3 4. 111 I. 5. What are the basic shapes of bacterial cells? What are the basic Know the terms. Which types of organisms have axial filaments? How would classify the following in terms of gram stain reaction and shape and arrangement of the cells Escherichia coli? Staphylococcus aureus? Streptococcus pyogenes? Bacillus anthracis? Do these organisms cause any important diseases? arrangements? you III
- Which organism can produce pyocyanin? O N. meningitidis O S. pyogenes O P. aeruginosa S. aureus Question 5 Which organism listed below can undergo blebyou grew streak plates of Clostridium sporogenes under both aerobic and anaerobic conditions. Which plates showed bacterial growth, and what does the zone around the metronidazole disc represent? Additionally, explain what types of bacterial growth metronidazole affects and why.Briefly explain this statement "Antineoplastic natural products- Taxol".please explain at your own words.