The urinary system helps to maintain the
extracellular fluid pH by
a. synthesizing buffers.
b. retaining carbon dioxide in the filtrate.
c. excreting excess hydrogen ions.
d. combining hydrogen ions with urea.
e. signaling the respiratory system to adjust
breathing rate
C
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Who was NOT involved in working out the structure
of DNA? a. Avery b. Watson c. Wilkins d. Franklin e. Chargaff
In modern day Finland, the blond hair and blue eyes of most individuals is the result of ____
a. natural selection b. genetic drift c. gene flow d. inheritance e. mutations
For threshold traits, the liability for a genetic disorder is distributed among individuals in a bell-shaped curve
a. True b. False
Which example represents a structural adaptation that an endotherm might make to maintain body temperature?
a. spraying oneself with water b. seeking shade under a plant c. increasing activity level d. having feathers e. shivering