Bacteriology Quiz Questions

Question 1

Most bacteria of veterinary importance are about what size?

Answer 1

1 micrometer

Question 2

What structures are NOT found in bacterial cells? (check all that apply)

Answer 2

mitochondria, nucleus, lysosomes

cell membrane and ribosomes are

Question 3

Most pathogenic bacteria are

Answer 3

facultative anaerobes

Question 4

Which bacteria have two cell membranes

Answer 4

gram negatives

Question 5

Selective media are those that

Answer 5

allow the growth of only some bacteria

Question 6

Which are the main molecular targets of antibiotics in the bacterial cell?

Answer 6

DNA synthesis, replication, ribosomes and cell wall

Question 7

Match the antibiotics listed to their targets

1. Beta lactam antibiotics
2. Fluoroquinolones
3. Tetracyclines
4. chloramphenicol

Answer 7

1. cell wall
2. DNA synthesis
3. Ribosomes
4. Ribosomes

Question 8

The minimally inhibitory concentration is defined as

Answer 8

the lowest concentration of an antibiotic that can prevent growth of a bacterium

Question 9

T or F: In general when comparing antibiotics it is good starting point to compare the MICs when deciding which antibiotic to use.

Answer 9

FALSE

Do not compare the MIC directly but only the interpretation provided by the laboratory. The the same MIC for two different antibiotics can mean very different things.

Question 10

Tor F: The characteristic of a bactericidal or bacteriostatic antibiotic varies by concentration.

Answer 10

TRUE

Question 11

The members of the family Enterobacteriaceae are

Answer 11

gram negative bacilli

Question 12

Shigatoxigenic E. coli are often associated with

Answer 12

edema disease in pigs

Question 13

Which Salmonella Species causes most diseases in calfs

Answer 13

enterica

Question 14

O antigen is associated with what structure?

Answer 14

LPS

Question 15

T or F: Antibiotics are the first line treatment for severe salmonella diarrhea cases

Answer 15

False

Question 16

Campylobacter in poultry is characterized by

Answer 16

little or no disease

Question 17

T or F: Lawsonia culture is a standard diagnostic technique

Answer 17

FALSE

As an obligate intracellular pathogen culture is very difficult and not done in a diagnostic setting.

Question 18

Campylobacter spp are best characterized as

Answer 18

Microaerophillic

Question 19

Helicobacter is

Answer 19

especially adapted to grow at a low pH

Question 20

The incubation period for Jone’s disease is

Answer 20

a couple of years

Question 21

bacteria in the genus Clostridium are

Answer 21

gram possitive anaerobes

Question 22

Detection of Clostridium spp. in feces of a dog is

Answer 22

very common in healthy animals

Question 23

T or F: Infection with Cl. tetani is required for disease

Answer 23

TRUE

Question 24

T or F: Infection with Cl. botulinum is required for disease

Answer 24

FALSE

Question 25

Histotoxic Clostridium associated disease often follows

Answer 25

localized anaerobic condition

Question 26

In dogs most UTIs are

Answer 26

complicated

Question 27

T or F: when you perform midstream voided urine sampling in a dog you can expect less than 1000 bacteria in a ml of urine in healthy animals

Answer 27

FALSE up to 10,000 CFU is considered contamination in midstream voided urine sampling in dogs.

Question 28

When you detect high levels of antibodies against leptospira in an unvaccinated animal you can assume that

Answer 28

The animal could be shedding leptospira organism in the urine

Question 29

T or F: leptospirosis is a zoonotic disease where close contact to infected animals is required

Answer 29

FALSE Infections often occur through contaminated surface water.

Question 30

Which are important defenses against UTIs

Answer 30

flushing, high osmolarity in urine, urea in urine

Question 31

Brucella abortus is (check all that apply)

Answer 31

found in greater yellowstone area, a possible zoonosis

Question 32

Characteristic of Campylobacter Jejuni

Answer 32

infections and diseas mainly in GI tract

Question 33

characteristic of Campylobacter fetus ssp fetus

Answer 33

infection through GI tract, mainly reproductive disease

Question 34

characterisitic of Campylobacter fetus ssp venerealis

Answer 34

infection and disease mainly in reproductive tract

Question 35

characterisitic of Campylobacter fetus ssp venerealis

Answer 35

infection and disease mainly in reproductive tract

Question 36

in chlamydia elementary bodies are

Answer 36

the infective form

Question 37

You detect antibodies agains Brucella in an unvaccinated animal. What can you assume?

Answer 37

the animal is currently infected

Question 38

You diagnose B. canis in a sire in a large scale commercial dog breeding operation. What is likely the best course of action?

Answer 38

euthanize

Question 39

Listeriosis is a disease that

Answer 39

is acquired through the G tract but largely manifests clinically outside the Gi tract

Question 40

Which is the most common source of infection of listeria in ruminants?

Answer 40

silage

Question 41

Contagious mastitis (choose all that apply)

Answer 41

is often caused by udder adapted pathogens is often spread by milking equipment is most often ascending through the teat canal. Is often milder than environmental mastitis

Question 42

What is the most effective way to prevent contagious mastitis?

Answer 42

post milking dipping

Question 43

The california mastitis test detects

Answer 43

host cells in milk

Question 44

T or F: Most pathogenic Staphylococcus species are coagulase negative

Answer 44

FALSE Most Staphylococcus species of veterinary importance are coagulase positive. Coagulase is a bacterial enzyme that leads to activation of the host coagulase cascade and leads to covering of the bacterium with host proteins and helps in avoiding immune responses.

Question 45

The most common agent involved in skin infection in dogs is

Answer 45

Staphylococcus pseudintermedius

Question 46

Staphylococcus pseudintermedius is isolated from a dog. What does this mean? (pick the best answer).

Answer 46

S. pseudintermedius is often isolated form healthy dogs. The finding depends on the location of the sample and clinical picture

Question 47

Members of the genus Bacillus are

Answer 47

gram positive aerobes

Question 48

Disposal of carcasses from animals that died of anthrax is best done by

Answer 48

burning the carcass

Question 49

Which type of organism is classically associate with migrating fox tail

Answer 49

Actinomyces

Question 50

Farcy is caused by

Answer 50

Burgholderia mallei

Question 51

Which animal species is most associated with diamond skin disease

Answer 51

pigs

Question 52

Which agent causes melliodosis?

Answer 52

Burgholderia pseudomallei

Question 53

What is associated with liver accesses in cattle?

Answer 53

high grain diet

Question 54

The lower respiratory tract is

Answer 54

largely free of bacterial colonization

Question 55

Kennel cough is best described as

Answer 55

a multifactorial disease

Question 56

Strangles is caused by an organism in what species?

Answer 56

streptococus equi

Question 57

Classically which organisms are involved in atrophic rhinitis (check all that apply)

Answer 57

Bordetella bronchoseptica Pasteurella multocida

Question 58

which heloysis pattern is most often observed in pathogenic streptococcus species

Answer 58

beta

Question 59

Mycobacterium do not stain well with the gram stain procedure because

Answer 59

they have a waxy cell wall

Question 60

Which of the following bacteria regularly causes disease in Alaska? Choose all that apply)

Answer 60

Francisella tularensis Mycobacterium tuberculosis

Question 61

in the laboratory plates are routinely incubated for how long to detect Mycobacterium bovid?

Answer 61

a couple of months

Question 62

In Europe, which insect is considered the main vector for tularemia?

Answer 62

mosquitoes

Question 63

What is the most important RESERVOIR for plague in Colorado

Answer 63

prairie dogs

Question 64

Hemoplasma infection most often lead to

Answer 64

subclinical infections

Question 65

Salmon poisoning disease is caused by

Answer 65

a bacterium transmitters by a fluke

Question 66

Cat scratch fever is caused by:

Answer 66

Bartonella henselae

Question 67

Possible differential diagnosis that present similar to cat scratch disease are:

Answer 67

plague Francisella infections

Question 68

Lyme disease is transmitted

Answer 68

after about a day or so by ticks

Question 69

Fungi are most closely related to.

Answer 69

animals

Question 70

zoophilic fungi are characterized by

Answer 70

growing on animals

Question 71

most clinical issues caused by fungi are associated with

Answer 71

reduced host defenses

Question 72

teleomporph stages are

Answer 72

sexual stages

Question 73

in dimorphic fungi disease is most often caused by

Answer 73

yeast