Bacteriology Exam #3 Quiz

False

In suspected cases of anthrax, necropsy should be performed on site. True or False?

A. Erysipelothrix rhusiopathiae

Diamond skin lesions in pigs are characteristic of infection with which pathogen?

A. Erysipelothrix rhusiopathiae

B. Corynebacterium suis

C. Mycoplasma synoviae

D. Mycoplasma hyorhinis

A. Ixodes scapularis

What is the tick vector for Borrelia burgdorferi in the East and Midwest USA?

A. Ixodes scapularis

B. Ixodes persulcatus

C. Ixodes pacificus

D. Ixodes ricinus

A. M protein

What virulence factor of Streptococcus equi subsp. equi is the most important in adhesion, invasion, evasion of immunity and protective immunity?

A. M protein

B. Streptokinase

C. Capsule

D. Se18.9

B. Dichelobacter nodosus

Colonies of virulent strains from lesions of ovine foot rot usually have dark central zone, a pale granular middle zone and a spreading irregular periphery with a ground glass appearance. What is the organism described here?

A. Fusobacterium necrophorum

B. Dichelobacter nodosus

C. Bacteroides spp.

D. Trueperella pyogenes

D. Clostridium septicum

What is the primary causative agent of malignant edema?

A. Clostridium chauvoei

B. Clostridium novyi type A

C. Clostridium sordellii

D. Clostridium septicum

C. Type IV fimbrae and serine protease

What are the two important toxins of Dichelobacter nodosus?

A. Dermonecrotic toxin and Hemolysin

B. Hemolysin and Haemagglutinin

C. Type IV fimbrae and serine protease

D. Leukotoxins A and B

True

MIC or minimum inhibitory concentration is the lowest concentration of an antibiotic which prevents visible growth of a bacterium. True or False?

A. True

B. False

C. Pasteurella multocida types D and A

What pathogen is responsible for the severe form of atrophic rhinitis?

A. Bordetella bronchiseptica

B. Avibacterium spp.

C. Pasteurella multocida types D and A

D. Mannheimia haemolytica

C. 25%

What percent of horses that have recovered from strangles do NOT produce a protective immunity?

A. 75%

B. 100%

C. 25%

D. 50%

B. Rickettsia rickettsii

What is the causative agent of Rocky Mountain spotted fever (RMSF)?

A. Anaplasma platys

B. Rickettsia rickettsii

C. Ehrlichia canis

D. Ehrlichia ewingii

B. Mycoplasma haemofelis

Feline infectious anemia is caused by which organism?

A. Mycoplasma gallisepticum

B. Mycoplasma haemofelis

C. Mycoplasma bovis

D. Mycoplasma ovis

A. VapA

What virulence factor of Rhodococcus equi is highly immunogenic, associated with pathogenicity and survival in phagocytes?

A. VapA

B. M protein

C. Cell Wall

D. Capsule

D. Neorickettsia risticii

What is the causative agent of Potomac horse fever?

A. Anaplasma bovis

B. Neorickettsia helminthoeca

C. Neorickettsia elokominica

D. Neorickettsia risticii

D. Clostridium chauvoei

Blackleg is an acute, highly fatal disease of cattle and sheep. What is the etiological agent of blackleg?

A. Clostridium novyi type A

B. Clostridium septicum

C. Clostridium sordellii

D. Clostridium chauvoei

D. Typhoidal and Pulmonary

Which form of tularemia in humans if left untreated accounts for highest mortality rates?

A. Glandular

B. Ulceroglandular

C. Oculoglandular and oropharyngeal

D. Typhoidal and Pulmonary

C. Non-nitrate reducing biotype of Corynebacterium

Infection with which of the following organisms results in abscessation and enlargement of superficial and internal lymph nodes in sheep?

A. Nitrate reducing biotype of Corynebacterium pseudotuberculosis

B. Corynebacterium renale

C. Non-nitrate reducing biotype of Corynebacterium pseudotuberculosis

D. Corynebacterium ulcerans

A. Anthrax

Absence of rigor mortis and exudation of unclotted blood from orifices in a cow that died suddenly is indicative of what disease?

A. Anthrax

B. Tularemia

C. Elokomin fluke fever

D. Anaplasmosis

C. Animals always show a distinct bull eye rash when infected with Lyme disease pathogen

Which of the statements about Lyme disease is INCORRECT?

A. Lyme disease is transmitted by ticks

B. Lyme disease affects both animals and humans

C. Animals always show a distinct bull eye rash when infected with Lyme disease pathogen

D. Lyme nephritis in dogs is usually fatal