A urine specimen from a maternity patient with the complaint of cystisis was recieved in the lab. The culture of tis sample grew a lactose- positive. Gram negative bacillys that was presumtively identified as E. Coli. On differential and selective media this organism would demonstrate which reaction?
A. Hektoen Enteric Agar= green/colorless colonies with black centers
B. MacConkey Agar= Colorless colonies
C. xylose-lysine-Desoxycholate Agar= yellow colonies
D. Xylose-Lysine Desoxychocolate Agar= colorless colonies
Answer: C. xylose-lysine-Desoxycholate Agar= yellow colonies
You might also like to view...
Transformation in bacteria results from the uptake of which molecule?
A) RNA B) DNA C) lipid D) protein E) polysaccharide
Which of the following is an adaptation against
predation?
a. thorns b. camouflage c. mimicry d. tough, chewy leaves e. all of these
A consequence of asexual reproduction in a plant is that __________.
A. gametes are produced in large numbers B. a partner is needed for reproduction C. pollen dispersal is critical to survival D. its entire genetic legacy can remain intact
In what portion of a eukaryotic cell is the majority of DNA isolated?
a. nucleus b. mitochondria c. vesicles d. cytoplasm e. lysosome