Exam 12: Staphylococcus, Micrococcus, and Similar Organisms

Which of the following methods combines nucleic acid amplification testing and mass spectrometry (MS)for identification of S.aureus and MRSA?

Quality control should be performed on which two organisms to determine the validity of the oxidase reagent?

In clinical isolates,the most likely identification of coagulase-positive,catalase-positive,gram-positive cocci that are penicillin resistant would be:

The Staphylococcaceae staphylococcus that is more likely to cause uncomplicated urinary tract infections in nonhospitalized hosts,especially sexually active young women,is:

Which group of bacteria is described as catalase positive and is gram-positive cocci that grow facultatively anaerobic and form grapelike clusters?

The most frequent agent of nosocomial bacteremia is:

The species of Staphylococcus,which is one of the most important human pathogens,is:

The slide coagulase test is a rapid screening test for the production of:

The tube coagulase test:

An infected intravenous (IV)catheter tip grew out gram-positive cocci,which were catalase positive and coagulase negative.The zone size of the novobiocin disk measured 18 mm.The most likely organism causing infection is:

Isolates of coagulase-negative Staphylococcus from urinary tract infections can be presumptively identified as S.saprophyticus on the basis of its:

Which organism is catalase positive,coagulase negative,pyrrolidonyl arylamidase (PYR)positive,susceptible to novobiocin,urease negative,and β-hemolytic on sheep blood agar?

A tube coagulase test was performed on catalase-positive,gram-positive cocci that were β-hemolytic and grew on mannitol salt agar.The tube was checked after overnight incubation and was negative.Which of the following statements explains this discrepancy?

Which virulent and important human pathogen can also be recovered from the nares,perineum,and other skin sites of healthy people,especially in the hospital setting?

The resident human microbiota,staphylococcus,which is more likely to cause infections in compromised hosts such as patients with cancer,is:

The first identification test performed on a clinical isolate of gram-positive,catalase-positive cocci would likely be the: