What is the function of the osmotic gradient found in the kidney? The osmotic gradient allows for _____
A) electrolytes to move from low to high concentrations in the absence of ATP
B) the precise control of the retention of water and electrolytes
C) the loop of Henle to deliver water to the renal vein
D) the filtration of large cells at the glomerulus
B
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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
What invention eventually led to current deep sea submersibles like Alvin?
a. Bathyscaphe b. Search-and-recovery vessels c. Diving bell d. Bathysphere
Which of the following is(are) correct regarding Actinoplanete spores? (Check all that apply.)
A. Actinoplanete form spores without the use of a sporangium. B. Actinoplanete have a rudimentary aerial mycelium. C. Actinoplanete spores can be motile via flagellation. D. Actinoplanete are often colored and pigmented.
Insects that lay eggs in or on another insect, called ____________, are often used in biological pest control.
A. parasitoids B. brood parasites C. commensal insects D. invaders E. hymenopterans