Clostridium 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 bacteria
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- Write a paragraph describing the colonies of: A) Clostridium perfringes B) Clostridium tetani C) Clostridium botulinumGROWTH OF FUSOBACTERIUM ON KANAMYCIN/VANCOMYCIN AGAR (KV) CAN BE DESCRIBED AS a) pigmented b) black c) hemolytic d) inhibited (no growth)If a experiment took place with culture of Ecoli What happens to the ampicillin flask when added to the e coli? b) How can this effect be explained 11.a) What happens in the flask with chloramphenicol? b) How can this effect be explained 12.a) What happens in the flask with streptomycin? b) How can this effect be explained
- About becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.Match the organism in column A to the symptom/manifestation in column B that fits it most appropriately. Use each description only once.lar COLUMN A COLUMN B i) Plasmodium falciparum a) Toxic shock syndrome ii) Cryptococcus neoformans b) Dental caries c) Newbom meningitis i) Clostridium perfringens iv) Chlamydophila psyttaci d) Pseudomembranous colitis v) Clostridioides dificille c) Dysentery vi) Staphylococcus aureus ) Fungal meningitis vii) Entamoeaba histolytica 8) Surgical wound infections viii) Sireptococcus mutans h) Gas gangrene ix) StreptococcuS agalactiae i) Pneumonia acquired from birds x) Pseudomonas aeruginosa j) MalariaThis pathogen is usuall foodborne and causes a mostly asymptomic disease. The most common foods associated with it are deli meats and unpasteurized dairy products. It rarely cause meningitis and spsis. It is mainly of concern because it can lead to still birth. This pathogen is a) Stahylococcus aureus b) Streptococci pneumoniae c) Listeria monocytogens d) Streptocpccus pyogenes
- Which of the following is a consideration in treating bacterial infections A) Bacteriostatic b) bactericidal c) broad spectrumWhy does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.Maargerines made from plant oils are healthier, since they are hydrogenated for spreadability? A)True B)false
- 10. The use of the autoclave ensures: a) the death of all bacteria b) the death of all bacterial spores c) all of the above d) none of the above.11. Foods can be preserved in all the followings except: a) lyophilizing b) Drying c) Salting d) Fermentation12. The temperature of the autoclave should be held for _____ minutes at least: a) 10 b) 15 c) 20 d) 30Match the organism in column A to the symptom/manifestation in column B that fits it most appropriately. Use cach description only once. COLUMN A i) Plasmodium falciparum COLUMN B a) Toxic shock syndrome i) Crуpiococсus neоformans ii) Clostridium perfringens iv) Chlamydophila psyttaci v) Clastridioides dificille b) Dental caries c) Newborn meningitis d) Pscudomembranous colitis e) Dysentery vi) Staphylococcus aureus f) Fungal meningitis vii) Entamoeaba histolytica g) Surgical wound infections viii) Streptococcus mutans h) Gas gangrene ix) Streptococcus agalactiae i) Pneumonia acquired from birds x) Pseudomonas aeruginosa j) MalariaIs the Mueller-Hinton Agar (MHA) a complex or defined medium? Explain based on its composition. Is MHA a A) differential, B) selective, C) both differential and selective media, or D) neither? Explain based on what kind of microorganisms it allows to grow.