Location: Outside U.S.
Date: October 2008
How are chemicals detected by cells? How could a body
distinguish among many different chemicals?
Protein receptors on the surface of cells bind the chemical and this sets
off a chain of biochemical reactions inside the cell. When the protein
molecule binds the chemical, it changes shape or orientation which sets
off the chain of reactions. Look up the binding of adrenalin to liver
cells which causes the release of glucose in to the blood stream.
Ron Baker, Ph.D.
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Update: June 2012