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1. Staphylococcus aureus is a common causative agent offoodborne disease because it
   1. Tolerates many common high-salt and high-fat foods
   2. Is present in some humans that work in food preparation
   3. Produces several heat-stable enterotoxins
   4. All of the above
2. EHEC produces a toxin called, ____________, that can causekidney failture.
   1. Endotoxin
   2. Exotoxin
   3. Verotoxin
   4. High fever
3. Ingesting food containing bacterial toxins results in_________, whereas ingesting food contaminated with viable bacteriathat replicate in the body results in __________.  
   1. Food infection / food poisoning
   2. Food poisoning / food infection
   3. Both result in food poisoning
   4. Both result in food infection
4. Listeria monocytogenesis?
   1. Acid-tolerant
   2. Cold-tolerant
   3. Salt-tolerant
   4. Acid-, cold-, and salt-tolerant
5. The most common source of Escherichiacoli(EHEC) food poisoning is contaminated
   1. Meat
   2. Fruits
   3. Grains
   4. Milk and milk products
6. Legionella pneumophila is generally transmitted by
   1. Ingesting contaminated food
   2. Drinking contaminated water
   3. Inhaling aerosols from contaminated water in coolers, pools,and domestic water systems
   4. Person-to-person contact
7. Wastewater is considered…?
   1. sewage
   2. water runoff from industrial plants
   3. bath water, dish water, et.
   4. all of the above
8. Clostridium perfringens food poisoning leads todiarrhea, because the
   1. toxin causes the shedding of the intestinal lining.
   2. permeability of the intestinal epithelium is altered by thetoxin it produces.
   3. disease causes such extreme thirst that the patient drinks morewater than can be absorbed.
   4. organism multiplies more rapidly than the immune system canhandle.
9. All of the organisms below require aHIGHinfectious dose to cause disease, EXCEPT?
   1. Vibrio cholerae
   2. Salmonella entericaTyphi
   3. Norovirus
   4. Clostridium perfringens
10. The symptoms of cholera are caused by?
    1. Active replication of Vibrio cholerain the smallintestine
    2. Ruffling of host cell cytoplasmic membrane
    3. Cholera toxin induces massive water movement into theintestinal lumen
    4. Cholera toxin blocks release of water into intestinallumen