Isolates of coagulase-negative Staphylococcus from urinary tract infections can be presumptively identified as S. saprophyticus on the basis of its:
a. penicillin susceptibility.
b. novobiocin resistance.
c. penicillin resistance.
d. novobiocin susceptibility.
B
Novobiocin resistance is a unique trait of S. saprophyticus, and testing for this trait is commonly used to identify this bacterium in the clinical setting.
You might also like to view...
Which organism can have more then one nucleus per cell?
A. Animals B. fungi C. protozoa D. B & C only E. A, B, & C
HIV
A. is a retrovirus. B. infects most mammals. C. can be killed with antibiotics. D. causes liver cancer. E. can be transmitted through the skin.
Darwin recognized that female preference for showy colors based on inheritance causes these male
traits to become more common over time. ________ Indicate whether the statement is true or false.
During neuronal signaling, a change in membrane potential will cause sodium channels to open and let Na+ ions diffuse down their concentration gradient into the cell. Which of the following helps establish the concentration gradient necessary for this process to occur?
A. voltage-gated Na+ channel B. Na+/K+ channel C. Na+ symporter D. Na+/K+ pump