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A: We’ll answer the first question since the exact one wasn’t specified. Please re-submit a new…
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A:
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- A microorganism has a D135 of 2 min. How many microorganisms will be left in the food sample after heat treatment at 135°C for 14 min if the initial microbial contamination is 109 cells/g product?Question No. 3: (a) How the “Food Borne Diseases” are spread? Enlist all the “Types of Food Borne Diseases” with a brief note on each one. (b) How the “milk borne diseases” are spread? Enlist all the “Four Sources” from which the “microorganism in milk” come from. Enlist the “Diseases” transmitted through “Milk” like the “diseases of bovine (esp. Ox and Cow) origin. Enlist the “Diseases” transmitted through “Milk” like the “diseases of human” origin. Define and briefly discuss the “pasteurization of milk”. (c) Define “air pollution”. Enlist the “Sources of Air Pollution”. Enlist the “Pollutants causing Air Pollution”. What is “Water Pollution”? Enlist the “Sources of Water Pollution”.Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the liquid waste water. Where does the liquid water go after separation? Define “aerobic”, “anaerobic” and “anoxic.” How does the plant get biological organisms into the reactors?
- https://courses.lumenlearning.com/microbiology/chapter/controlling-microbial-growth/ Read this Article about Controlling Microbial Growth and answer the following questions: What are some characteristics of microbes and infectious agents that would require handling in a BSL-3 laboratory? What is the purpose of degerming? Does it completely eliminate microbes? What are some factors that alter the effectiveness of a disinfectant?You have been working in the quality control lab at Koo for a month when you noticed a dramatic increase in the incidence of thermophilic incubator spoilage of canned sweet corn produced by the company. Describe the steps you would use to determine the cause of the increased spoilage. Your discussion must include the procedures you would use to determine the thermal death time and the D-value of the spoilage organism.ANSWER ALL QUESTIONS, IF NOT WILL GIVE THUMBS DOWNTRUE OR FALSE1. Enzymes such as catalase and peroxidase are important for the neutralization of toxic radicals produced during the aerobic respiration of bacteria. 2. Artificial or forced transformation is always performed in the laboratory. ======================================================== 3. Most microorganisms that are clinically significant are called: ___ A. Thermophiles B. Pscychrophiles C. Psychoduric D. Mesophiles
- Question:- For the following organisms, how much growth would you experience on a nurtient agar plate and a brewer anaerobic agar plate? The organisms are: Obligate aerobe, microaerophile, facultative anaerobe, obligate anaerobe, and aerotolerant. Would Obligate aerobes, faculative anaerobes, microaerophiles, obligate anaerobes, or aerotolerants grow on a nutrient agar plate or brewer anaerobic agar plate? Which of those types grow on each plate?Which of the following statements regarding low temperature storage is FALSE? Question options: freezing inhibits microbes through the unavailability of water freezing causes microbial death largely through DNA denaturation all of these statements are TRUE refrigeration functions largely by reducing the metabolic rate of microbes psychrophiles are generally not effectively inhibited by refrigeration many bacteria can survive freezing for years at a timeSupport your answer using computation-based judgment. Encircle/box your final computed answer in your solutions along with a declaration of TRUE or FALSE for each given situation. UHT-pasteurized milk sample X which was spread-plated in quadruplicates yielded the following bacterial colony counts: 23, 20, 35 and 41 CFU/plate at a dilution factor of 100. Therefore, the milk sample will pass laboratory standards if the quality control laboratory sets the total microbial limit as: “not to exceed more than 30,000 CFU/mL of milk sample”.
- I need to find two gram positive and two gram negative pathogenic bacteria that may be classified as being facultative anaerobes. What tissues or organs do these bacteria target in the human body? Why is it to their advantage to be able to use either aerobic respiration or anaerobic respiration/fermentation?Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the liquid waste water. Solve 2, 3 and 4. How does the plant get biological organisms into the reactors? Ans. Biological organisms are fed into the reactors in the form of activated sludge. The activated sludge contains both aerobic and anaerobic bacteria, fungi and protists. These microorganisms are used to degrade the organic materials present inside the waste water. It is generally used during secondary and tertiary treatment of waste water. 2. What do these organisms remove from the water? 3. How does temperature affect the activity of these microorganisms? 4. When the water leaves the biological reactor, where does it go?Which of the following statements regarding low temperature storage is FALSE? Question options: all of these statements are TRUE refigeration inhibits microbes through the unavailability of water low temperature storage the metabolic rate of microbes many bacteria can survive freezing for years at a time psychrophiles are generally not effectively inhibited by refrigeration freezing causes microbial death through membrane destruction