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horchata12345 horchata12345
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7 years ago
There are ________ different olfactory receptor proteins in humans that allow us to sense a variety of odors.

a.  350-400
b.  1,000-1,500
c.  100,000-500,000
d.  10-15
e.  5-10
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Educator
7 years ago
a.  350-400
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