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- Why is it important for the commercial canning process to destroy the endospores of Clostridium botulinum?Name a non biodegradable pesticide.What is the difference between the use of Peppermint oil and Cinnamon oil in Veterinary Medicine to treat the bacterial infections Escherichia coli and Staphylococcus?
- One characteristic of the ideal pesticide is that it would: 1) be of animal origin. 2) be of vegetable origin. 3) quickly break down to harmless products.Write a paragraph explaining the Gram stain result and the differences in the endospores of these three spices: a) Clostridium perfringes b) Clostridium tetani C) Clostridium botulinum1. The Petri Dish method is used in microbiology to raise bacteria in: a) rapid growth b) pure culture c) septic environment d) all of the above 2. What is the difference between antiseptic and sanitization? 3. In order to prevent any kind of contamination the medium must be _________ before placing it in the Petri dish. a) lyophilized b) pasteurized c) autoclaved d) distilled
- Commercial canning processes are designed to ensure destructionof which of the following?a) All vegetative bacteriab) All virusesc) Endospores of Clostridium botulinumd) E. colie) Mycobacterium tuberculosisHow can you use the characteristics of L.monocytogenes to produce a growth medium that is both selective and differential that can aid in the isolation of Listeria monocytogenes?Describe the appearance of an S. agalactiae colony grown on blood agar. Describe how that colony would differ in appearance from a colony of S. pyogenes.
- Based on the knowledge acquired about the conservation and propagation of microorganisms, propose methodologies for:a) conservation of stock culture (used infrequently) of baker's yeast (S. cerevisiae);b) conservation of the working culture (used daily) of the baker's yeast;c) activation (1st stage of propagation) of the work culture;d) propagation of cultures until inoculating a 100 L reactor toi) production of baker's yeast;ii) ethanol production.Explain how PEMBA (polymyxin-pyruvate-egg yolk-mannitol-bromthymol blue-agar) is used to isolate, differentiate and enumerate Bacillus cereus from food sample.Gardnerella vaginalis is a gram variable rod. What type of media should be used when culturing for it? Describe the appearance of the colonies.
