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 (A)</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 (C)</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 (B)</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 (C)</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 (B)</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 (B)</p> Signup and view all the answers

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

<p>Fecal-oral route (D)</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 (B)</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 (D)</p> Signup and view all the answers

Which of the following statements about prion diseases is correct?

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

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

<p>Taeniasis (C)</p> Signup and view all the answers

Which of the following diseases is caused by an amoeba?

<p>Amoebiasis (C)</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 (D)</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 (A)</p> Signup and view all the answers

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