The hairpin design of the loop of Henle allows events on one side of the loop to influence the events on the other side, by a process referred to as
A) paratubular movement.
B) countercurrent exchange.
C) bulk flow.
D) glomerular filtration.
E) tubular reabsorption.
B
Biology & Microbiology
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Killing of graft cells occurs through a complex series of mechanisms including
A. sensitized T cytotoxic cells. B. NK cells. C. erythrocytic cells. D. basophilic cells. E. sensitized T cytotoxic cells AND NK cells.
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In honeybees, queen bees are haploid organisms while male drones are diploid
a. True b. False
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In the United States, the most common cause of rabies in humans is from
a) raccoons. b) silver-haired bats. c) dogs. d) honey badgers.
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About one-third of all animal and plant species are concentrated on ________ of Earth's land
A) 20% B) 10% C) 5% D) 1.5%
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