Food Microbiology Final Exam 100% Correct Answers

T or F: C. perf and C. bot produce neurotoxins? {Ans: False}Listeria can host cell infection and invade the immune system by which of the following methods? a. Protein markers on its cell wall b. High grade of motility, epithelial adhesion, and toxin production. c. Motility, invasion of phagosome, and cell to cell spread. d. Low pH tolerance and low temperature growth requirement e. O and H antigens {Ans: c. Motility, invasion of phagosome, and cell to cell spread.}Best was to resist Hep A? {Ans: vaccination, once contracted, develop immunity.}What % produce thin walls? {Ans: 20% thin walls in GI tract of humans and live there for months.}The use of bacteriophages as an antimicrobial must be declared on the label of the product as an additive. Tru or False {Ans: True}Cyclospora cayetanensis is mostly found where? {Ans: Contaminated water}