MT1-W10 - Name (1 point)_ Student ID #_ FST 104 Winter 2010...

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Name (1 point)___________________________ Student ID #_____________________________ FST 104 Winter 2010 Midterm #1 (Feb 5, 2010) PLEASE RECORD YOUR TEST VERSION LETTER (shown on page 6 of the exam) and the correct answers to questions 1-33 on a blue Scantron form UCD 2000 using a #2 pencil. (If you did not bring the Scantron form, circle the letter of the correct answer directly on the exam pages. We will correct your exam by hand and assess a penalty of ten points.) Multiple choice -- choose the letter of the one correct answer [3 points each] 1. Which of the following is a correct match between the pathogen and the typical host in which the pathogen grows? A Taenia sanginata – pigs B Entameoba histolytica -- cats C Salmonella enteriditis (or enterica) -- poultry D Claviceps purpurae – eggs E Hepatitis A -- cattle 2. Which of the following is an incorrect statement regarding Clostridium perfringens? A Some strains produce an enterotoxin B Some strains produce an emetic toxin C The organism can grow at temperatures exceeding 50 C D The organism must grow extensively in the food in order to cause illness E The organism appears to cause “disease without colonization” by growing within the victim 3. In general, which of the following has the best chance of surviving outside the host? A Vegetative cells of Gram positive bacteria B Vegetative cells of Gram negative bacteria C Trophozoites D Enveloped viruses E Naked viruses For questions 4, 5, and 6, please match each disease symptom with ONE likely causative agent chosen from this list: A Diphilobothrium latum B Yersinia enterocolitica C Listeria monocytogenes D Rotavirus E E. coli O157:H7 4. Gastroenteritis associated with considerable abdominal pain, can be mistaken for appendicitis. 5. Gastroenteritis and possible dysentery, sometimes followed by HUS (hemolytic uremic syndrome) in young children. 6. Often asymptomatic in young adults but can cause birth defects.
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- 2 - 7. By definition, all enterotoxins: A Cause muscle paralysis B Cause dysentery C Cause gastroenteritis D Are produced by viruses of the Enterovirus group E Are produced by bacteria of the Enterobacteriaceae (Enteric family) For each of the food-borne disease outbreaks shown in questions 8, 9 and 10, choose the letter of the ONE pathogenic agent listed that would most likely be implicated in each. 8. A group of 34 family and friends ate raw oysters at an anniversary dinner party at a seafood restaurant. The ages of the guests ranged from 4 to 78 years of age and included two immuno-compromised adults, one long-term alcoholic, and three pregnant women. None of the guests reported difficulty for several days, but the alcoholic person suddenly fell ill and died soon after admission to a hospital emergency room. The cause of his death was found to be an infection that spread throughout his entire body via the bloodstream. Which of the following is the most likely cause? A
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MT1-W10 - Name (1 point)_ Student ID #_ FST 104 Winter 2010...

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