Streps and Staphs
Some Staphylococcus species may look like what in broth media macroscopically?
Puff balls
The primary isolation of Neisseria gonorrhoeae requires what in its environment?
Carbon dioxide
The most common cause of an uncomplicated type of urinary tract infection in females of child-bearing age is:
E. coli
The formation of germ tubes presumptively identifies what?
Candida albicans
What is the most common parasitic infection of humans in North America?
Pinworms
What 2 diseases can be caused by ineffective treatment of beta-hemolytic streptococci infections?
Glomerulonephritis, rheumatic fever
The media that is enriched and selective for the isolation of Neisseria pathogens is:
Modified Thayer-Martin agar
MacConkey media for screening suspected cases of hemorrhagic E-coli O157:H7 must contain what?
Sorbitol
The colony description of M. tuberculosis is most likely to be interpreted as...
buff and crumb-like
Which Malaria organism is especially associated with crescent shaped gametocytes?
Plasmodium falciparum
A gamma hemolytic organism that is gray/white, coagulase negative and novobiocin sensitive is what organism?
Staphylococcus saprophyticus
What organism is Bacticard IB positive, pinkish/tan on chocolate agar with dry colonies that can be pushed around on the plate?
Moraxella catarrhalis.
What organism has metallic colonies on BAP and has a grape-like odor?
Pseudomonas aeruginosa
Which moulds are a yeast at body temperature and a mould at room temperature?
The dimorphs
What is the giant intestinal round worm?
Ascaris lumbricoides
A beta-hemolytic streptococci that is bacitracin-sensitive and CAMP- negative is
Group A Strep/S. Pyogenes
An organism that exhibits the satellite phenomenon around colonies of staphylococci on is.
Haemophilus Influenzae
This organism must be incubated in a microaerophilic environment at 42 C and is seen as a curved or seagull shaped GNR.
Campylobacter spp.
This fungal class has cottony or dirty white colonies, is very resistant to antifungal drugs and are known as the "lid lifters".
Zygomycetes
This is the largest of the pseudopodic protozoans, the cyst is 25 micron in diameter and has up to 16 nuclei
Entamoeba coli
What test differentiates Strep pneumoniae and Strep viridans? AND what are the reactions of each?
Optochin ("P" disk)
S. pneumoniae is sensitive
S. viridans is resistant
What media should be set up for a sputum culture?
BAP (one capnophilic, one anaerobic), CAP (capnophilic) and a MAC (aerobic)
What non-fermenter is known to be extremely resistant to antibiotics and is the 3rd most commonly isolated non-fermenter is clinical settings?
Stenotrophonmonas maltophilia
What is the best medium for culture of Mycobacterium tuberculosis?
Lowenstein-Jensen media
What is the most common protozoan to cause traveler's diarrhea?
Giardia lamblia