In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: A urine Gram stain shows gram-positive cocci in clusters. The tested catalase positive. To SPECIATE this organism form culture, the tech should perform a coagulase test and a/an:Answer: novobiocin Question: The Gram stain from a blood culture shows gram-pos cocci in chains. No occurs on blood agar plates incubated aerobically and anaerobically. Additional testing should be done to detect the presence of:Answer: Abiotrophia Question: Viridans streptococci can be from Streptococcus pneumoniae by:Answer: bile Question: A reliable test for distinguishing Staphylococcus aureus from other is:Answer: Question: The optochin (ethylhydrocupreine hydrochloride) disk is used for the of:Answer: pneumoniae Question: In the susceptibility test, if there is a zone of inhibition of 19-30mm surrounding the disk following overnight incubation at 37C, the colony MOST likely consist of:Answer: Question: Which 2 diseases are usually preceded by with beta-hemolytic streptococci?Answer: and rheumatic fever Question: The enterotoxin by certain strains of hemolytic, coagulase positive Staphylococcus aureus:Answer: causes one type of food poisoning Question: A -hemolytic Streptococcus that blackens bile esculin agar but does not grow in 6.5% NaCl broth is MOST likely:Answer: D Streptococcus Question: Gram stain examination from a blog culture bottle shows dark blue, spherical organisms in clusters. Growth on sheep blood agar shows small, round, pale colonies. Further tests should include:Answer: catalase production and coagulase Question: Gram-positive cocci in chains are seen on a Gram stain from a blood culture. The organism as a beta-hemolytic colony. Further tests that could be performed include:Answer: bile , PYR, bacitracin, and hippurate Question: "Nutritionally deficient" are:Answer: in the genera Granulicatella and Question: A beta-hemolytic streptococcus that has been isolated from an ear culture grows up to the edge of a 0.04 unit bacitracin disk. Which would help to determine if the organism is Entercoccus?Answer: growth in 6.5% NaCl Question: The organism MOST commonly associated with purulent meningitis is:Answer: B streptococci Question: An important of acute exudative pharyngitis is:Answer: pyogenes Question: is the MOST frequent cause of prosthetic heart valve infections occurring within 2-3 months after surgery is:Answer: epidermidis Question: Which of the 2 different antimicrobial agents are commonly used and may results in synergistic action in the treatment of endocarditis caused by faecalis?Answer: a penicillin and an aminoglycoside Question: Children who have with beta-hemolytic streptococci can develop:Answer: glomerulonephritis Question: A gram-pos coccus isolated from a blood culture has the following characteristics: optochin suscept-neg, bacitracin suscept-neg, bile hydrolysis-neg, hippurate hydrolysis-pos, catalase-neg. The organism is MOST likely:Answer: Streptococcus Question: A beta-hemolytic that is bacitracin-sensitive and CAMP-negative is:Answer: group Question: A beta-hemolytic Streptococcus that is -resistant and CAMP-positive is"Answer: group Question: Group B, beta-hemolytic streptococci may be from other hemolytic streptococci by which procedure?Answer: antigen typing Question: It is important to differentiate between Enterococcus and D strep because:Answer: enterococci often show more antibiotic than group D streptococci Question: Streptococcus pneumonia can be best from the viridans group of streptococci by:Answer: bile Question: Characteristically, are:Answer: resistant to penicillin Question: A beta-hemolytic, catalase positive, gram-positive is coagulase negative by the slide coagulase test. Which is the MOST appropriate action in identification of this organism?Answer: do a tube coagulase test to confirm the test Question: would best differentiate Streptococcus agalactiae from Streptococcus pyogenes?Answer: hydrolysis of hippurate Question: The MOST critical distinction between Staphylococcus and other Staphylococcus is:Answer: coagulase Question: Which organisms is, to date, considered universally susceptible to :Answer: Streptococcus Question: A beta-hemolytic gram-pos coccus was isolated from CSF of a 2 day old infant w/signs of meningitis. This isolate grew on sheep blood agar under aerobic conditions and was to a bacitracin disc. What should be performed for the identification?Answer: antigen testing Question: How many hours after eating contaminated food do initial symptoms of staphylococcal food typically occur?Answer: 2-6 Question: During the past month, Staphylococcus epidermis has been from blood cultures at 2-3 times the rate from the previous year. The MOST logical explanation for the increase in these isolates is:Answer: there has been a break in proper skin preparation before blood for culture Question: An outbreak of Staphylococcus has occurred in a hospital nursery. In order to establish the epidemiological source of the outbreak, the MOST commonly used typing method is:Answer: pulsed-field ges Question: A yellow colony from a wound culture tested catalase-positive and coagulase-negative. The organism stained as gram-positive cocci in . Which tests would differentiate between coat-neg staph and Micrococcus?Answer: susceptibility Question: A light yellow colony from a skin lesion grew aerobically and was catalase positive and coag neg. Gram as positive cocci in clusters, modified oxidase positive, bacitracin susceptible and resistant to lysostaphin. The identification is?Answer: Micrococcus Question: An isolate of unknown beta-hemolytic Strep is streaked perpendicular to a streak of beta-lysin producing S. aureus. Zone of arrowhead hemolysis is noted. What is the name of the test and presumptive ID of strep?Answer: CAMP test and S. Question: Which organism may be used as a quality control organism for the bile esculin test?Answer: Enterococcus |
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