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- Consider a gram-negative pathogen isolated from marine mammals. This pathogen is subjected to a series of tests and found to have the following characteristics: oxidase-positive, does not hydrolyze urea, produces indole, does not produce acetoin. Which of the following could it be? O Pasteurella mulocida O Klebsiella pneumoniae O Yersinia enterocolitical O Mannheimia haemolyticaClostridium spp palys vital role in meat spoilage. a) Describe possible conditions of spoilage cause by this bacterium b) suggest factors that can contribute to spoilage condition stated in (a). c) suggest possible process that can be done to avoid the growth of this bacteriaEnterobacteriaceae species might be differentiated (from one another) by all of the following except: o amino acid fermerntation o lactose fermentation O oxidase test o Eosin Methylene Blue agar o MacConkey agar
- A child consumed watermelon in a restaurant and was thereafter infected with Esc. coli O157:H7. Investigations revealed that the knife used to slice the melon was also used to cut raw beef (and then washed). What could have been done to prevent the situation?Botulism is commonly associated with ingestion of specific typesof food prepared in a particular manner. What is it about both thefood and preparation that encourages infection?1. Where is staphylococcus aureus commonly found? 2. What staphylococcus aureus its significance in medical microbiology? 3. Is staphylococcus aureus an obligate aerobe or facultative anaerobes? 4. can staphylococcus aureus catabolism glucose or lactose? Does it produce strong acid products such as lactic or acetic acid? 5. Does staphylococcus aureus produce by product that are converted to alcohols?
- What makes bacterial diseases such as Clostridium botulinum, Clostridium perfringens & Clostridium tetani very effective to cause infection in a human host?Every year, supposedly safe municipal water supplies causeoutbreaks of enteric illness.a. How in the course of water analysis and treatment might thesepathogens be missed?b. Why is there less tolerance for a fecal coliform in drinking orrecreational water than for other bacteria?Helicobacter pylori is able to use urease to neutralize the stomach environment because the enzyme produces: acids O bases • carbons amino acids
- holsappleeus scarius is a normal flora of the human intestenal tract. its facultative anaerobe capable of catabolizing carbohydrates. which conditions will give them the most growth?Adequate cooking is the usual way to prevent food poisoning. Whydoesn’t it work for Clostridium perfringens and Bacillus foodpoisoning?A patient has bloody diarrehea and takes left over penicllin in a medicne cabinet. The culprit causing the infection turns out to be E. coli of a hemorrahgic variety that is Penicllin resistant. Why is the patient is worse condition now?