A study of nosocomial infections involving urinary catheters is performed. The study shows that the longer an indwelling urinary catheter remains, the higher the rate of symptomatic urinary tract infections (UTIs). Most of these infections are bacterial. Which of the following properties of these bacteria increase the risk for nosocomial UTIs?
AEnzyme elaboration
BBiofilm formation
CQuorum sensing
DExotoxin release
Which organism causes prosthetic valve endocarditis within 60 days of surgery?
AStaphylococcus aureus
BStaphylococcus epidermidis
CFungus
DStreptococcus viridans
The ability of bacteria and microcolonies within biofilm to communicate with one another is?
ATransmission
BConjugation
CTransformation
DQuorum sensing
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