Your patient has a rash, a fever, and a very high white blood cell count. Blood specimens are taken, put into culture bottles, and sent down to the microbiology lab for incubation and analysis. Select the statement that best reflects why microbial analysis of blood is an important step in patient diagnosis.
A. Microbial growth in blood samples may indicate sepsis.
B. A lack of microbes in the blood means that the patient's health is critical.
C. Blood specimens are often obtained through poor aseptic technique by the healthcare worker: this is documentation of their failure to employ proper universal precautions.
D. A few bacterial cells in a blood sample are no big deal and should be ignored.
Answer: A
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The pH of stomach acids is usually ____or lower
a. 2 b. 4 c. 7 d. 10 e. 12
Which phenotypes are parental?
In Drosophila, the autosomal recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). Flies who are homozygous recessive at both pr and cn have orange eyes. A female who has wild-type eyes is crossed to an orange-eyed male. Their progeny have the following distribution of eye colors:
A) wild-type and orange
B) brown and bright-red
C) wild-type and brown
D) bright-red and orange
E) There is no way to determine this.
Small molecules can move between capillaries and interstitial fluid by _____
a. passive transport b. active transport c. endocytosis d. diffusion e. exocytosis
Dental plaque is an example of
A) an endospore. B) a cell membrane. C) a biofilm. D) beneficial bacteria. E) bacterial flagella.