Final review

What role do oculars (eyepiece) play in a microscope?

They multiply the magnification of the objectives by ten.

What type of agar is MacConkey agar?

A differential and selective agar.

At what temperature are most bacterial cultures incubated?

Human body temperature.

What is the incubation temperature for fungal cultures?

Room temperature.

How should the genus and species be written?

Staphylococcus aureus

What color do Gram-positive organisms appear when stained?

Purple

What color do Gram-negative organisms appear when stained?

Red

What is the main purpose of the simple stain?

Outline the shape of the bacteria

Which bacterium is identified using the acid-fast stain?

Mycobacterium species

Which organism is most likely to grow on Mannitol salt agar?

Staphylococcus species

Which of the following is a mannitol fermentor?

Staph aureus

What shape are cocci?

Round

What shape are bacilli?

Rod

What bacterium causes Bang's disease?

Brucella abortus

What is the Camp test specific for?

S. agalactiae

Which stain is used to stain bacteria?

Gram stain

Delta hemolysis is:

Double zone of hemolysis

Which organism causes strangles?

Streptococcus species

Escherichia coli normally found in the:

Intestinal tract

Which bacteria is normally found on the skin?

Staphylococcus epidermidis

What is Dermatophyte Test Medium used for?

Fungi

What stain is used for molds?

Lactophenol Cotton Blue

The catalase enzyme is used by organisms to break down:

Hydrogen peroxide

Staphylococcus is:

Gram positive

What organism causes Bumblefoot?

Staphylococcus

What shape is Staphylococcus?

Cocci

What type of bacteria is E. coli?

Gram negative bacilli

Which bacteria is zoonotic and can be cultured from reptiles?

Salmonella species

Which bacteria causes pinkeye in cattle?

Moraxella bovis

What causes Kennel cough?

Bordatella bronchiseptica

What is the API 20E used for?

Gram negative organisms

What media is used for the Kirby Bauer test?

Mueller Hinton

What type of hemolysis is beta hemolysis?

Clear zone of hemolysis

What does MacConkey agar select for?

Gram negative and lactose fermenters

What disease does Clostridium chauvoei cause?

Black leg

What are the stains in the Gram stain process?

Two of the above

What agar is used for inoculating molds?

Sabouraud agar

Which bacteria can be cultured from a dog's ear?

Pseudomonas species

What is cystitis most often caused by?

Gram negative bacilli

What bacteria causes diamond skin disease in pigs?

Erysipelothrix species

How do bacteria reproduce?

Binary fission

Where do aerobic bacteria grow?

In the presence of oxygen

What does the KOH test replace?

Gram stain

What commonly causes calf scours?

E. coli

What does Listeria sp. cause?

Nervous disorders

What is the gram reaction of molds?

Gram positive

What does Mycobacterium paratuberculosis cause?

Johne's disease

What is the causative agent of anthrax?

Bacillus species

What causes snuffles in rabbits?

Pasteurella species

Leptospira shed in animals by:

Urine

What are endotoxins produced by?

Gram negative bacteria

What does dermatophytosis pertain to?

Cutaneous mycosis

What is the major source of tularemia exposure?

Rats

What is ergot?

Fungi

What does the tuberculin test check for?

Mycobacterium

Of the following, the organism which belongs to the non-invasive group of pathogenic clostridia is:

Clostridium botulinum

What are general characteristics of streptococci?

Non-motile and occurring singly, in pairs, or chains

A large number of Staphylococcus aureus colonies and several colonies of a large gram-positive rod with Chinese letter arrangement grew on a plate inoculated with material from a canine abscess.  The colonies of the gram-positive rod are most likely:

Corynebacterium pyogenes

What predisposes pink eye or infectious kerato conjunctivitis?

A combination of solar radiation and summer season

What characterizes bovine viral diarrhea?

All of the above

What is true about Nocardia?

Involved in abscesses that break down and form fistulas

What infections can Pseudomonas aeruginosa cause in dogs?

Ear and urinary tract

Which organism has a characteristic fruity odor?

Pseudomonas

Which organism swarms on blood agar?

Proteus

What aids in selecting infected hairs for fungus culture?

Woods light

Which is not a characteristic of Enterobacteriaceae?

Oxidase positive

What causes shipping fever?

P. hemolytica

How is Campylobacter fetus ss venerealis transmitted?

Spreads from cow to cow by the bull during breeding

Which statement is NOT correct about Staphylococcus characteristics?

Spore forming

What causes wooden tongue in cattle?

Actinobacillus

What microorganism has unique bipolar staining?

Pasteurella

What is the previous name for Vibrio?

Campylobacter

What is an important sign of pink eye?

Cloudiness of the cornea

What is India ink used for?

Capsules