Freshwater fish reside in hypotonic environments. They do not drink water, and they excrete large volumes of hypotonic urine in an effort to osmoregulate. How do they obtain an adequate supply of electrolytes?
A) The rectal gland is specialized to produce the dilute (hypotonic) urine and conserve ions.
B) Chloride cells transport additional electrolytes into the circulation of these organisms.
C) Gill filaments take up additional electrolytes from freshwater.
D) There is an increase in Na+/K+-ATPase activity across the basolateral membrane.
Answer: C
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Each of the following is an effect of complement activation EXCEPT
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Different glycoproteins can have a diverse array of oligosaccharides. Which of the statements below about this diversity is true?
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