TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
Infections - ANSWERS-are illnesses in which live bacterial pathogens
are ingested and grow in the body
Bacteria causing Staphylococcal Food Poisoning - ANSWERS-
Staphylococcus aureus
Staphylococcal Food Poisoning toxins are often consumed in -
ANSWERS-Toxins are often consumed in protein-rich foods: Meat and
fish, Dairy products, Incubation is 1-6 hours, No taste or odor
Staphylococcal Food Poisoning's enterotoxin - ANSWERS-causes
gastroenteritis for several hours
Staphylococcal Food Poisoning contaminates food by - ANSWERS-
Boils or abscesses on a handler's skin and Through sneezing
Staphylococcal Food Poisoning prevention - ANSWERS-Proper
handling, refrigeration, and heating help decrease the risk of
contamination
END OF
PAGE
1
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
2nd most reported foodborne disease - ANSWERS-Staphylococcal Food
Poisoning
Lab Identification of S. aureus: - ANSWERS-Gram-Positive coccus,
Mannitol +, Catalase +, Coagulase +, Salt tolerant, Strains identified by
"phage typing", DACK test→ detects toxin in foods by precipitation
tests with anti-toxin
DACK test - ANSWERS-Detects Staphylococcus aureus toxin in foods
by precipitation tests with anti-toxin
Bacteria causing Samonellosis - ANSWERS-Salmonella enterica
serotype Enteritidis or Typhimurium
Samonellosis Transmission - ANSWERS-Can be contracted from a
variety of foods: Unpasteurized milk or poultry products and
Transmitted by live animals
Samonellosis symptoms - ANSWERS-Gastroenteritis occurs 6-48 hours
after a large infectious dose
END OF
PAGE
2
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
Bacteria causing E. coli diarrhea - ANSWERS-Escherichia coli
E. coli diarrhea causes - ANSWERS-Cause various forms of
Gastroenteritis
E. coli diarrhea are found in - ANSWERS-Normally found in the human
intestine, but certain serotypes are pathogenic
E. coli diarrhea Transmission - ANSWERS-Transmission occurs
through the fecal-oral route
Entertoxigenic E. coli (ETEC) - ANSWERS-penetrate the intestinal
epithelium and produce a toxin that causes gastroenteritis, Traveler's
Diarrhea
Traveler's Diarrhea - ANSWERS-Entertoxigenic E. coli (ETEC)
END OF
PAGE
3
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
Enteropathogenic E. coli (EPEC) - ANSWERS-cause diarrhea in infants,
particularly where sanitation is lacking
Enterohemorrhagic E. coli (EHEC) Transmission - ANSWERS-often
transmitted by undercooked ground beef (or bagged spinach)
Enterohemorrhagic E. coli (EHEC) most common form - ANSWERS-
O157:H7
Enterohemorrhagic E. coli (EHEC) contamination is found in -
ANSWERS-Contamination in unpasteurized milk and juice, sprouts,
lettuce, and salami
Enterohemorrhagic E. coli (EHEC) infection - ANSWERS-Infection
→can occur from contact with cattle or swimming in/consuming
contaminated water
Enterohemorrhagic E. coli (EHEC) small infectious dose - ANSWERS-
A small infectious dose → causes hemorrhagic colitis 1-8 days after
infection
END OF
PAGE
4
MICROBIOLOGY
FINAL EXAM
Infections - ANSWERS-are illnesses in which live bacterial pathogens
are ingested and grow in the body
Bacteria causing Staphylococcal Food Poisoning - ANSWERS-
Staphylococcus aureus
Staphylococcal Food Poisoning toxins are often consumed in -
ANSWERS-Toxins are often consumed in protein-rich foods: Meat and
fish, Dairy products, Incubation is 1-6 hours, No taste or odor
Staphylococcal Food Poisoning's enterotoxin - ANSWERS-causes
gastroenteritis for several hours
Staphylococcal Food Poisoning contaminates food by - ANSWERS-
Boils or abscesses on a handler's skin and Through sneezing
Staphylococcal Food Poisoning prevention - ANSWERS-Proper
handling, refrigeration, and heating help decrease the risk of
contamination
END OF
PAGE
1
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
2nd most reported foodborne disease - ANSWERS-Staphylococcal Food
Poisoning
Lab Identification of S. aureus: - ANSWERS-Gram-Positive coccus,
Mannitol +, Catalase +, Coagulase +, Salt tolerant, Strains identified by
"phage typing", DACK test→ detects toxin in foods by precipitation
tests with anti-toxin
DACK test - ANSWERS-Detects Staphylococcus aureus toxin in foods
by precipitation tests with anti-toxin
Bacteria causing Samonellosis - ANSWERS-Salmonella enterica
serotype Enteritidis or Typhimurium
Samonellosis Transmission - ANSWERS-Can be contracted from a
variety of foods: Unpasteurized milk or poultry products and
Transmitted by live animals
Samonellosis symptoms - ANSWERS-Gastroenteritis occurs 6-48 hours
after a large infectious dose
END OF
PAGE
2
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
Bacteria causing E. coli diarrhea - ANSWERS-Escherichia coli
E. coli diarrhea causes - ANSWERS-Cause various forms of
Gastroenteritis
E. coli diarrhea are found in - ANSWERS-Normally found in the human
intestine, but certain serotypes are pathogenic
E. coli diarrhea Transmission - ANSWERS-Transmission occurs
through the fecal-oral route
Entertoxigenic E. coli (ETEC) - ANSWERS-penetrate the intestinal
epithelium and produce a toxin that causes gastroenteritis, Traveler's
Diarrhea
Traveler's Diarrhea - ANSWERS-Entertoxigenic E. coli (ETEC)
END OF
PAGE
3
, TCU DR JONES LATEST
MICROBIOLOGY
FINAL EXAM
Enteropathogenic E. coli (EPEC) - ANSWERS-cause diarrhea in infants,
particularly where sanitation is lacking
Enterohemorrhagic E. coli (EHEC) Transmission - ANSWERS-often
transmitted by undercooked ground beef (or bagged spinach)
Enterohemorrhagic E. coli (EHEC) most common form - ANSWERS-
O157:H7
Enterohemorrhagic E. coli (EHEC) contamination is found in -
ANSWERS-Contamination in unpasteurized milk and juice, sprouts,
lettuce, and salami
Enterohemorrhagic E. coli (EHEC) infection - ANSWERS-Infection
→can occur from contact with cattle or swimming in/consuming
contaminated water
Enterohemorrhagic E. coli (EHEC) small infectious dose - ANSWERS-
A small infectious dose → causes hemorrhagic colitis 1-8 days after
infection
END OF
PAGE
4
