The olfactory epithelium is found in the
(a) ear.
(b) nasal cavity.
(c) eye.
(d) tongue.
(b) nasal cavity.
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A 15-year-old male was diving in a lake when he inhaled some of the stagnate water. Five days later he was admitted to the hospital, comatose, and in critical condition. A cerebrospinal fluid (CSF) specimen was taken, and several motile amoebae were observed. The patient would most likely be diagnosed with which of the following conditions?
a. Granulomatous amebic encephalitis b. Primary amebic meningoencephalitis c. Secondary amebic encephalitis d. Chronic granulomatous meningitis
Why are molecular methods particularly useful for identification of microbes when they are difficult to grow?
A. While all microbes can (and should) be grown for identification purposes, sometimes it's simply faster to use a molecular technique. B. They AREN'T useful-growing a microbe is clearly the only way to properly identify it. C. Since all microbes use DNA, and we can sometimes detect and identify them through even very small amounts of their DNA, molecular methods allow us to identify microbes even when they can't be grown at all. D. Molecular methods are far cheaper methods than growing microbes for identification.
To break down a glucose molecule completely,
how many "turns" of the Krebs cycle are required?
a. 2 b. 3 c. 4 d. 6 e. 12
Extreme thermophiles that live near thermal vents must have all of the following adaptations except
A) plasma membrane lipids that are highly branched and saturated. B) plasma membrane lipids that are highly unsaturated. C) they must also be barophiles. D) specialized chaperone proteins. E) proteins that resist thermal denaturing.