Patients are instructed to collect sputum specimens in such a way as to minimize contamination with normal microbiota from the mouth. A sputum specimen has arrived in the clinical laboratory and a Gram-stained smear of the specimen reveals a mixture of Gram-positive cocci, Gram-negative cocci, and Gram-positive bacilli as well as numerous squamous epithelial cells.This result indicates
A. a poor quality specimen of primarily saliva and oropharyngeal microbiota.
B. that the specimen has been properly collected and is representative of sputum.
C. that the patient has bacterial pneumonia rather than viral pneumonia.
D. that the patient has a pneumonia caused by a mixture of different bacteria.
Answer: A
You might also like to view...
Energy is defined as
A. heat. B. the capacity to do work. C. change. D. movement.
Dissolved oxygen is highest in which body of water?
a. warm eutrophic lake b. slow-moving tropical river c. pool within a cool forest stream d. white water stretch of a cold river e. dissolved oxygen should be the same in all waters
Why would rapid change in climate potentially lead to ecological problems?
A. Evolution is unlikely to occur quickly enough to keep pace with biome changes. B. Animals don't migrate fast enough. C. Most biome shifts lead to rainforest formation and shading out of native plants. D. Water availability will decrease, driving aquatic species extinct. E. All of the answer choices are correct.
Which of the following molecules does not act as a second messenger?
a. protein kinase b. IP3 c. DAG d. calcium ions e. cyclic AMP