STUDY GUIDE BIO205 CH23

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karlap
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213008
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STUDY GUIDE BIO205 CH23
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2013-04-11 23:52:25
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STUDY GUIDE BIO205 CH23
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STUDY GUIDE BIO205 CH23
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  1. 6 Bacteria that make up most of the microbiota of the LOWER SMALL INTESTINE and COLON?
    • Bacteroides
    • Lactobacillus
    • E.coli
    • Enterobacter
    • Proteus
    • Klebsiella
  2. How do  bacteria that make up most of the microbiota of the LOWER SMALL INTESTINE and COLON benefit humans?
    • Produce Vitamin K
    • B12
    • Folic acid
    • Biotin
  3. Whats is Bacterial Gastroenteritis?
    Inflammation of stomach or intestines
  4. What are the symptoms of Bacterial Gastroenteritis?
    • Nausea 
    • vomit
    • diarrhea
    • cramps
  5. What is the primary treatment of Bacterial Gastroenteritis?
    replacement of fluids & electrolytes
  6. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Cholera
    • Vibrio cholera: Fresh and salt water
    • cholera toxin (A-B toxin)
    • virulence factor binds to epithelium
  7. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Shigellosis
    • Shigella (4) species: produce type III secretion system & diarrhea
    • Enters and kills intestinal cells- produce mucosal adcesses
    • produce enterotoxin
  8. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Traveler's Diarrhea
    • E. coli: a coliform, lives primarily in colon
    • Toxin produce is Shiga-like toxin by E.coli
  9. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Campylobacter Diarrhea?
  10. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Antimicrobial- Associated Diarrhea?
    • Clostridium difficile
    • 2 toxin: A- breakdown endothelial cells junctions, triggers inflammation and loss of fluids.
    • B- kills cells, produce lesions and form pseudomembrane
  11. "Pathogen and Virulence Factors" and Pathogenisis of Bacterial Gastroenteritis?
    Salmonellosis and Typhoid Fever?
    • Salmonella enterica
    • Type III secretion system introduce toxins
  12. How does Bacterial Food Poisoning differ from bacterial gastroenteritis?
    Microbes may not be present
  13. What are the signs and symptoms of Bacterial Food Poisoning?
    • Nausea
    • vomit
    • diarrhea
    • abdominal cramp
    • bloating
    • fever
    • loss appetite
    • dehydration
  14. What are the pathogens and virulence factors of Bacterial Food Poisoning?
    • Staphylococcus aureus- from bodies of food preparers 
    • Senterotoxins
  15. Viral Gastroenteritis compare to bacterial gastroenteritis?
    less severe than bacterial forms
  16. What are signs and symptoms of Viral Gastroenteritis?
    • abdominal pain
    • cramping
    • diarrhea
    • nausea
    • vomit
    • fever
    • chills
    • clammy skin
    • weight loss
    • dehydration
  17. What are the most common pathogens of Viral Gastroenteritis?
    • Caliciviruses
    • astroviruses
    • rotaviruses- cause 10% of cases
    • contaminated from food or H2O
  18. Viral Hepatitis?
    Inflammation of the liver
  19. What are the four general causes of hepatitis?
    • autoimmune disease 
    • alcohol or drug abuse
    • genetic disorder
    • microbial infections
  20. What are the signs and symptoms of hepatitis?
    • occur years after infection
    • jaundice
    • abdominal pain
    • dark urine
    • clay- colored stool
    • loss appetite
    • nausea
    • vomit
    • fever
    • fatigue
  21. What are the 5 pathogens of Viral hepatitis?
    • Hepatitis a- can survive on surfaces for days, resist bleach, transmitted by fecal-oral route, 99% recovery, vaccine 
    • b- released by infected cells & sexually, needles, vaccine
    • c- 
    • delta- doesn't make capsid 
    • e-
    • B+ delta= cancer
  22. Giardiasis?
    interfere with breakdown of food
  23. What are the signs and symptoms of Giardiasis?
    • severe 
    • greasy
    • frothy
    • fatty diarrhea
    • abdominal pain
    • nausea
    • vomit
    • fluid loss
  24. What is the pathogen and how do people get infected with Giardiasis?
    • Giardia intestinalis:
    • Tropozoite (reproduce)
    • Cyst form (resistant to chlorine, heat, desiccation, stomach acid)
    • Ingestion of contaminated water, raw fruits and vegetables
  25. More than _____ species in the mouth.
    700
  26. _____ mutants grows on teeth.
    Streptococcus
  27. ____ of mass of feces
    40%
  28. dental plaque?

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