A microbiologist is trying to isolate a pathogen expected to be present in very small numbers from a stool specimen in which there are abundant normal microbiota. Which strategy would most likely accomplish this purpose?
A. Culture on differential media
B. Culture in an anaerobe jar
C. Culture on enriched media
D. Enrichment culture followed by culture on selective agar
Answer: D
You might also like to view...
Approximately how many gene products are involved in the synthesis of melanin in humans?
a. 10 b. 25 c. 50 d. 100 e. 1000
The most plentiful sugar in nature is
a. glucose. b. sucrose. c. fructose. d. maltose. e. lactose.
Among Natterjack toads in northern Europe, males produce booming calls to attract females. Females desire large males and the size of the male determines the volume of the call. Why is the Natterjack's call considered an "honest signal"?
a) because the call of the Natterjack male accurately provides both distance and direction to the female b) because the female Natterjack toads were taught by their mothers to avoid dishonest signals c) because the call of a large Natterjack male cannot be faked by a smaller Natterjack male d) because the large Natterjack males invest more parental effort than smaller Natterjack males e) because the female Natterjack toads can detect a booming call from a small toad.
Although actinomycetes vary in many ways, they all share a common type of cell wall.
Answer the following statement true (T) or false (F)