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Food Microbiology Final > Quizes > Flashcards

Quizes Flashcards

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1
Q

Clostridium perfringes, under ideal growth conditions, can have a generation time as short as?

A

7 minutes

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2
Q

What food borne illness is most commonly associated with improperly home canned vegetables?

A

Clostridium botulinum

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3
Q

Which of the following foodborne pathogens causes illness as a result of infection?

a. Bacillus cereus emetic type
b. Clostridium botulinum
c. Clostridium perfringens
d. Staphylococcus aureus

A

Clostridium perfringens

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4
Q

Toxin produced by which of the following is heat and trypsin stable?

a. Clostridium perfringens
b. Bacillus cereus emetic type
c. Bacillus cereus diarrheal type
d. Clostridium botulinum Type E

A

b. Bacillus cereus emetic type

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5
Q

The protein toxin crystal of B. thuringiensis is toxic to?

A

insects

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6
Q

This type of B. cereus gastroenteritis is very “Clostridium perfringens”like.

A

diarrheal type

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7
Q

What food product formerly(and somewhat still) had a close association with the emetic type of B. cereus gastroenteritis?

A

fried rice

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8
Q

Clostridium prefringens was formerly known as:

A

Clostridium welchii

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9
Q

What is the primary symptom of Clostridium perfringens?

A

diarrhea

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10
Q

Of Clostridium botulinum, Staphylococcus aureus, Bacillus cereus, Clostridium perfringens, and Vibrio spp., which causes the greatest number of estimated annual food borne illness in the US?

A

Clostridium perfringens

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11
Q

Ultimately, victims o C. botulinium food borne illness die from:

A

suffocation

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12
Q

One kilogram of C. bot toxin would be sufficient to kill what maximum number of people?

A

the population of the world

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13
Q

The heavy chain of C. bot toxin has what function?

A

binds to nerve cell

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14
Q

This uneviscerated, ethnic food product has been responsible for numerous cases of botulism in the US and world-wide.

A

Kapchunka

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15
Q

Infant botulism is caused by:

A

infants consuming bot spores

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16
Q

Infant botulism is treated by administrating?

A

botulism immune globulin

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17
Q

Bacillus thuringiensis is differentiated from B. cereus by what specific feature?

A

production of a parasporal crystal

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18
Q

Clostridium botulinum was discovered by?

A

Emile van Ermengem

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19
Q

In 1895, individuals from what common group were the first to be “diagnosed” with illness from Clostridium botulinium?

A

musicians

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20
Q

Of the 7 types of C. bot, how many of the types produce illness in humans?

A

4

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21
Q

Which of the 7 types of C. bot is the most deadly to humans?

A

Type A

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22
Q

Which of the following proteolytic types of C. botulinum is psychrotrophic?

a. Type A
b. Type B
c. Type C
d. Type D
e. none of them

A

e. none of them

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23
Q

What is unique about food borne illness caused by C. botulinum?

A

it is neurotoxigenic

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24
Q

The first documented outbreak of listeriosis was associated with what food?

A

cole slaw

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25
Q

Which food borne pathogenic species of Shigella causes the most severe illness?

A

S. dysenteriae

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26
Q

Victims of foodborne illness from Shigella, as well as some other food borne bacteria, who manifest human leukocyte antigen, B27, are predisposed to what sequela?

A

reactive arthritis

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27
Q

16% of foodborne disease outbreaks on cruise ships are caused by this pathogen.

A

Shigella

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28
Q

Infection from E. coli O157:H7 has been historically, primarily most commonly associated with consumption of what food?

A

ground beef

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29
Q

This sequela to STEC infections can result in renal failure.

A

HUS

30
Q

Enterotoxigenic E. coli causes watery diarrhea and is sometimes nicknamed:

A

Montezuma’s Revenge

31
Q

Thrombotic thrombocytopenic purpura is a sequela of STEC infection that primarily affects:

A

the elderly

32
Q

This food borne pathogen is an intracellular parasite

A

Listeria monoctyogenes

33
Q

Six year old Lauren Rodolph died after eating fast food contaminated with what food borne pathogen?

A

E. coli O157:H7

34
Q

In the human intestinal tract, Listeria moncytogenes moves from cell to cell by means of:

A

actin propulsion

35
Q

Intimin is a product of:

A

eae gene of E. coli O157:H7

36
Q

An increase in fluid in the intestinal limen, followed by watery diarrhea is cased by:

A

increased cyclic adenosine monophosphate in the intestinal villi

37
Q

Which pathotype of E. coli does not produce a toxin and is invasive?

A

EIEC

38
Q

EHEC is MUG-negative because it

A

does not produce B-glucuronidase

39
Q

The ability of E. coli O157:H7 shiva-toxin targets kidney cells because of

A

the presence of Gb3 receptors

40
Q

Stx represents:

A

Shiga toxin

41
Q

Hemolytic activity of L. monoctyogenes can be enhanced by what?

A

Christie, Atkins, Munch-Peterson test

42
Q

A multi-state outbreak of listeriosis in 2011 was associated with what from a single farm from Colorado?

A

cantaloupe

43
Q

What organism is used in the CAMP test to enhance hemolysis of weekly hemolytic organisms?

A

Staphylococcus aureus

44
Q

E. coli was discovered by:

A

Theodor Escherich

45
Q

For stereotyping enterofhemorrhagic E. coli, NM represents?

A

non motile

46
Q

The normal habitat for E. coli O157:H7 is:

A

GI tract of mammals

47
Q

“Traveler’s diarrhea” is caused by:

A

enterotoxigenic E. coli

48
Q

How many species of Salmonella are recognized?

A

2

49
Q

This server of Salmonella is recognized as the most heat resistant.

A

Senftenberg

50
Q

This milk-borne outbreak of salmonellaosis in the Chicago area resulted in over 16000 confirmed cases was attributed to what?

A

a faulty flow diversion valve

51
Q

A 1989 outbreak of salmonellosis associated with cantaloupe from Mexico resulted from contaminated melons from:

A

hauling melons in a truck previously used to haul pigs

52
Q

Concerns about the ability of Salmonella to develop increased heat resistance developed from several recent salmonellosis outbreaks associated with what low moisture food?

A

peanut butter

53
Q

Symptoms of infection with this food borne pathogen include pseudo-appendicities, which has resulted in numerous, unnecessary appendectomies.

A

Yersinia enterocolitica

54
Q

In addition to reactive arthritis, infection from Campylobacter jejune can lead to this other, very serious sequel:

A

Guillain-Barre Syndrome

55
Q

Bubonic plague is caused by infection from what pathogen?

A

Yersina pestis

56
Q

Salmonella was discovered by whom?

A

Daniel Salmon

57
Q

The discoverer of Salmonella earned the first degree in what field award in the USA?

A

veterinary medicine

58
Q

Which of the following food borne pathogens is a spore former?

a. Salmonella Typhimurium
b. Yersina enterocolitica
c. Campylobacter jejuni
d. Vibrio cholerae
e. none of the above

A

e. none of the above

59
Q

This 2002 outbreak of yersiniosis in Chicago affected nine infants who either ate or were exposed to what?

A

chitterlings

60
Q

This species of Vibrio actually causes more confirmed cases of illness in the US than the CDC estimates!

A

V. vulnifcus

61
Q

In 2010, an epidemic of V. cholerae caused over 1/2 million estimated illnesses and at least 7000 deaths in what country?

A

Haiti

62
Q

Illness caused by this organism, to date, has only affected infants.

A

Cronobacter sakazakii

63
Q

This food borne pathogen is an obligate microaerophile, requiring 3-5% O, 2-10% CO2 for growth.

A

Campylobacter jejuni

64
Q

The english physician in #10 above demonstrated the source of the cholera epidemic by doing what?

A

removing the handle from a water pump

65
Q

THis English physician determined the cause of what is now known to have been an epidemic of cholera in the late 1800s.

A

John Snow

66
Q

Camplyobacter jejuni is most commonly associated with what food?

A

chicken

67
Q

This Gram negative food borne pathogen was originally called Vibrio fetus?

A

Campylobacter jejuni

68
Q

This foodborne pathogen is not only salt tolerant, it requires 1% NaCl for growth.

A

Vibrio parahaemolyticus

69
Q

This species of Vibrio causes food borne illness as well as necrotzing fascitis.

A

V. vulnifcus

70
Q

What test uses freshly drawn human blood to determine virulence of strains of Vibrio paraemolyticus?

A

Kanagawa reaction

71
Q

This biotype of Vibrio cholera is currently the most significant and has a significantly lower infectious dose.

A

El Tor

72
Q

Infection with Vibrio cholera can cause profuse, watery diarrhea of up to 1L/hour, which is often referred to as:

A

rice water stool

Food Microbiology Final (2 decks)

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