BIOL 220 Infectious Diseases: Food & Waterborne Diseases Exam II
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Questions and Answers

What is the primary characteristic of Staphylococcus aureus that causes Staphylococcal Food Intoxication?

  • It is an obligate anaerobe that produces endospores
  • It produces a heat-labile neurotoxin
  • It produces a heat-stable enterotoxin (Type I exotoxin) (correct)
  • It is a gram-negative bacterium found on human skin
  • Which disease is caused by the bacterium Clostridium botulinum and its characteristic toxin?

  • Salmonellosis
  • Botulism (correct)
  • Shigellosis
  • Hemorrhagic Colitis
  • Which disease is characterized by bloody diarrhea and is associated with the use of antibiotics or antiprotozoal drugs?

  • Typhoid Fever
  • Salmonellosis
  • Bacterial Gastroenteritis
  • Clostridium difficile-Associated Diarrhea (correct)
  • Which disease is caused by a serovar (strain) of Salmonella that multiplies within phagocytes and has a long incubation period of weeks?

    <p>Typhoid Fever</p> Signup and view all the answers

    Which disease is caused by a bacterium that produces Shiga toxin and can lead to Hemolytic Uremic Syndrome (HUS)?

    <p>Hemorrhagic Colitis</p> Signup and view all the answers

    Which disease is often referred to as 'Traveler's diarrhea' and is caused by a motile, coliform bacterium that produces an enterotoxin?

    <p>Bacterial Gastroenteritis</p> Signup and view all the answers

    Which disease is caused by a bacterium that possesses fimbriae and multiplies within the epithelial cells of the gastrointestinal tract?

    <p>Shigellosis</p> Signup and view all the answers

    Which disease is characterized by a low percentage (1-3%) of chronic carriers and is transmitted through fecal-oral contamination of water or food?

    <p>Typhoid Fever</p> Signup and view all the answers

    Which of the following is a characteristic of the cholera bacterium, Vibrio cholerae?

    <p>It has a single polar flagellum</p> Signup and view all the answers

    What is the primary route of transmission for hepatitis A virus (HAV)?

    <p>Fecal-oral route</p> Signup and view all the answers

    Which of the following viruses is known to cause poliomyelitis, a disease characterized by limb paralysis?

    <p>Poliovirus</p> Signup and view all the answers

    Which of the following is a characteristic of the protist Giardia intestinalis, the causative agent of giardiasis?

    <p>It has flagella for motility</p> Signup and view all the answers

    Which of the following statements about prion diseases is correct?

    <p>They affect the nervous system</p> Signup and view all the answers

    Which of the following is the adult stage of the beef tapeworm infection?

    <p>Taeniasis</p> Signup and view all the answers

    Which of the following diseases is caused by an amoeba?

    <p>Amoebiasis</p> Signup and view all the answers

    Which of the following viruses primarily affects children and has a seasonal prevalence in winter months?

    <p>Rotavirus</p> Signup and view all the answers

    Which of the following statements about brucellosis (undulant fever) is correct?

    <p>It is caused by Brucella abortus</p> Signup and view all the answers

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