Prelim 2 2005 - Name:_Answer Key_ APPLIED AND FOOD...

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Name:____Answer Key__________ APPLIED AND FOOD MICROBIOLOGY 394 PRELIMINARY EXAM 2 November 18, 2005 PART I. MULTIPLE CHOICE (two (2) points each) Choose the ONE best answer for each question. 1. In industrial fermentation, which method of growing cells results in the greatest optical density? A. 96-well plate B. Shake Flask A. Bioreactor C. Streak plate 2. Which of the following agars can be used for Salmonella selection? A. Brilliant Green (BG) agar B. Bismuth sulphite (BS) agar C. Hektoen enteric (HE) agar D. All of the above 3. Spiral-curved rod-shaped describes the shape of which organism? A. Campylobacter B. Yersinia C. Escherichia D. Salmonella 4. Fimbriae are virulence factors of which organism? A. Escherichia coli B. Campylobacter C. Salmonella D. Vibrio 5. All of the following strains of microorganisms are commonly used for microbial production of amino acids EXCEPT : A. Streptomyces coelicolor B. Brevibacterium C. Corynebacterium D. Saccharomyces cerevisiae 6. Given a batch of meatloaf where n=10; c=3; m=300; and M=10^5 the salmonella test results are 0, 0, 150, 200, 350, 75, 100, 10^4, 1.9*10^4, 35. Do you allow the rest of the batch to be distributed? Please explain your answer . A. Yes, because c=max acceptable number above m, therefore 3 samples over 300 is acceptable .
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7. A huge food poisoning outbreak occurred at the Red Lobster in Jackson, Wyoming (surprise, surprise). The suspect is Vibrio parahaemolyticus . You would most likely make an enrichment medium that was: A. High salt B. High salt and alkaline C. Low salt and alkaline D. Alkaline 8. People who have HLA-type HLA-B27 are particularly susceptible to which organism?
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Prelim 2 2005 - Name:_Answer Key_ APPLIED AND FOOD...

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