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Microbiology Review
Vet 240
106
Veterinary Medicine
Undergraduate 2
01/12/2015

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Cards

Term
What do prions cause?
Definition
Transmissible spongiform encephalopathies
Term
What does "prion" allegedly stand for?
Definition
Proteinaceous infectious agent
Term
Bacterial growth phases
Definition
Lag phase, exponential growth, stationary phase, decline phase
Term
Other names for the exponential growth phase
Definition
Log, generation time, doubling time
Term
pH requirements of most clinically significant bacteria
Definition
6.5-7.5
Term
Temperature requirements of clinically significant bacteria
Definition
20-40C
Term
Where does agar come from?
Definition
Sea algae
Term
Where does gelatin come from?
Definition
Animal tissue
Term
What is Mueller-Hinton media used for?
Definition
Antibiotic sensitivity
Term
What is thioglycolate broth used for?
Definition
Anaerobic bacteria
Term
4 types of Blood Agar hemolysis
Definition
Beta, Alpha, Gamma, Delta
Term
Morphology of blood agar with beta hemolysis
Definition
Complete hemolysis
Term
Morphology of blood agar with alpha hemolysis
Definition
Partial hemolysis or "greening" of agar
Term
Morphology of blood agar with gamma hemolysis
Definition
No hemolysis
Term
Morphology of blood agar with delta hemolysis
Definition
Double-zone hemolysis
Term
Examples of selective/differential media
Definition
MacConkey (selects for G-)
Simmons Citrate (diffs bacterial that uses citrate)
Term
How does MacConkey media work?
Definition
Crystal violet suppresses gram positive
Term
What does the Simmons Citrate test do, and how is the test read?
Definition
Differentiates between bacteria that do and do not use citrate. Starts green, turns blue if positive.
Term
What is brain-heart infusion broth used for?
Definition
Blood culture (septicemia)
Term
What happens to brain-heart infusion broth if Strep. bacteria is present?
Definition
It becomes transparent
Term
Which bacteria causes black leg in livestock?
Definition
Clostridium chauvoei
Term
What are the three locations for spores to form? Give an example of a disease with each appearance.
Definition
Central (anthrax)
Subterminal (black leg)
Terminal (tetanus)
Term
What is a suprainfection?
Definition
A secondary infection caused by an opportunistic pathogen
Term
Which bacteria would you not gram stain for?
Definition
Mycoplasma
Term
Why use gram stain?
Definition
Helps determine predominate organism in a mixed specimen (e.g. fecal smear)

Helps select appropriate anti-bacterial drugs
Term
What does a pink background indicate on a gram stained slide?
Definition
Excessive proteinaceous material
Term
Under gram stain, what color should epithelial cells be?
Definition
Pink
Term
Under gram stain, what color should WBCs be?
Definition
Pink
Term
What do you look for in a gram stained fecal smear?
Definition
Proportion of G+ to G- bacteria. Should be mostly G+
Term
Which test should be done for "gram variable" bacteria?
Definition
KOH
Term
What happens to a KOH test of G- bacteria?
Definition
Turns boogery ("mucoid, strand-like")
Term
What happens to a KOH test of G+ bacteria?
Definition
Mixture remains homogenous
Term
Why would you stain a slide with Lactophenol blue?
Definition
To confirm and identify fungi
Term
How does lactophenol blue work?
Definition
Phenol kills organisms, lactic acid preserves fungal structures, and cotton blue stains the chitin in the fungal cell walls
Term
What do fungal hyphae indicate?
Definition
Vegetative state bacteria
Term
In which species are we most concerned about aspergillus?
Definition
Avian
Term
Which type of yeast is most commonly found in the ears?
Definition
Malassezia
Term
Which type of yeast is most commonly found in mucous membranes?
Definition
Candida
Term
What does a positive DTM look like?
Definition
Gel turns red
Term
What is the colloquial name of blastomycoses? When is it likely to show up?
Definition
Chicago disease

Wet grass in the spring
Term
Where would you find histoplasma?
Definition
Bird and bat droppings
Term
What do you use Acid Fast stain for?
Definition
Mycobacterium, Nocardia, and Cryptosporidium (in reptiles)
Term
What do you use Giemsa stain for?
Definition
Anthrax
Term
What do you use Malachite Green for?
Definition
Endospores
Term
What do you use fluorescent stain for?
Definition
Pseudomonas
Term
Which bacteria groups are catalase tests peformed on?
Definition
Gram positive cocci, a few gram positive bacilli
Term
Which genus are Catalase+?
Definition
Staph, bacillus
Term
Which genus are Catalase-?
Definition
Strep, clostridium
Term
Which bacteria groups are coagulase tests used on?
Definition
Catalase-positive, gram-positive cocci
Term
Which genus is coagulase+? What does the result look like?
Definition
Pathogenic Staph. aureus, fibrin clot
Term
Which genus is coagulase-? What does the result look like?
Definition
Staph. epidermis, stays liquid
Term
Which bacteria groups are oxidase tests used on?
Definition
Gram negative bacilli
Term
Which genus is Oxidase+? What indicates +?
Definition
Pseudomonas (and others), test turns red
Term
Which genus are Oxidase-?
Definition
Enterics
Term
What is a SIM test used for?
Definition
Motile bacteria
Term
What is a TSI test used for?
Definition
Specific pH ranges
Term
What is a cAMP test used for?
Definition
Strep. Hemolyses red cells
Term
Gram positive cocci (3)
Definition
Streptococcus
Enterococcus
Staphylococcus
Term
Streptococcus notes
Definition
Gram positive
Can be single, diploid, chains
Commensal gut bacteria, opportunistic pathogens
Term
Staphylococcus notes
Definition
Gram positive
Usually grapelike clusters
Commensal skin/MM bacteria, opportunistic pathogen. Many abx resistant strains
Term
Gram negative cocci (1)
Definition
Moraxella (bovis, ovis)
Term
What does Moraxella cause?
Definition
Infectious bovine keratoconjunctivitis
Term
Gram positive bacilli (8)
Definition
Bacillus anthracis
Clostridium
Corynebacterium
Listeria
Actinomyces
Nocardia
Erysipelothrix
Lactobacillus
Term
Palisading bacteria
Definition
Corynebacterium
Listeria
Term
What does Corynebacterium cause?
Definition
Mastitis, ulcerative lymphangitis
Term
What does Listeria cause?
Definition
Abortions and encephalitis
Term
Filamentous bacteria
Definition
Actinomyces
Nocardia
Term
Notes on Actinomyces
Definition
Anaerobic
Filamentous
Causes lumpy jaw
Term
Notes on Nocardia
Definition
Partial acid fast
Aerobic
Filamentous
Intracellular
30+ dz species
Term
Notes on Erysipelothrix
Definition
Most common in pigs - causes septicemia, "diamond skin pattern" in acute cases
Has high mortality. Zoonotic.
Term
Gram negative aerobic bacilli (5)
Associated diseases
Definition
Pseudomonas - pneumonia
Brucella - brucellosis
Bordetella - kennel cough
Francisella - tularemia
Neisseria - gonorrhea
Term
Gram negative facultative bacilli (12)
Associated diseases
Definition
Echerichia - NF, E. coli, UTIs
Shigella - dysentery
Salmonella
Klebsiella - NF, pneumonia
Enterobacter - NF
Citrobacter
Yersinia - plague
Proteus - UTI
Aeromonas - Aquatic
Actinobacillus - Lg. animal
Haemophilus - oral commensal
Pasteurella - rabbits
Term
Gram negative anaerobic bacilli (1)
Definition
Bacteroides (NF, increasingly Abx resistant)
Term
Gram negative pleomorphic bacteria (5) and associated dz
Definition
Rickettsia (RMSF)
Anaplasma
Mycoplasma (rodent resp.)
Haemobartonella (aka Mycoplasma)
Chlamydia
Term
Spirochetes (3) and associated dz
Definition
Leptospira
Treponema - Syphilis
Borrelia - Lyme
Term
Spiral/curved bacteria (2)
Definition
Campylobacter (GI disease)
Helicobacter (ulcers)
Term
What kind of bacteria is Bacillus anthracis?
Definition
Gram positive bacilli
Term
What kind of bacteria is Clostridium?
Definition
Gram positive bacilli
Term
What kind of bacteria is Corynebacterium?
Definition
Gram positive bacilli
Term
What kind of bacteria is Listeria?
Definition
Gram positive bacilli
Term
What kind of bacteria is Actinomyces?
Definition
Gram positive bacilli
Term
What kind of bacteria is Nocardia?
Definition
Gram positive bacilli
Term
What kind of bacteria is Erysipelothrix?
Definition
Gram positive bacilli
Term
What kind of bacteria is Lactobacillus?
Definition
What kind of bacteria is
Term
What kind of bacteria is Pseudomonas?
Definition
Gram negative aerobic bacillus
Term
What kind of bacteria is Brucella?
Definition
Gram negative aerobic bacillus
Term
What kind of bacteria is Bordetella?
Definition
Gram negative aerobic bacillus
Term
What kind of bacteria is Francisella?
Definition
Gram negative aerobic bacillus
Term
What kind of bacteria is Neisseria?
Definition
Gram negative aerobic bacillus
Term
What kind of bacteria is Bacteroides?
Definition
Gram negative anaerobic bacillus
Term
What kind of bacteria is Escherichia?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Shigella?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Salmonella?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Klebsiella?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Enterobacter?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Citrobacter?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Yersinia?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Proteus?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Aeromonas?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Actinobacillus?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Haemophilus?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Pasteurella?
Definition
Gram negative facultative bacillus
Term
What kind of bacteria is Rickettsia?
Definition
Gram negative pleomorphic
Term
What kind of bacteria is Anaplasma?
Definition
Gram negative pleomorphic
Term
What kind of bacteria is Mycoplasma?
Definition
Gram negative pleomorphic
Term
What kind of bacteria is Chlamydia?
Definition
Gram negative pleomorphic
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