Another Cellualar Switch....
a: Cell receptor ~
b: kind of switch
What: "Each cellular receptor is like a kind of switch connected to a lock-and-key mechanism, similar to the ignition system for a car. Only the binding of a specific chemical to the receptor will trigger the molecular switch, just as a car will start only if the correct key is inserted into its ignition."
Useful?
Writer: Not Stated
LCC:
Where:
Date: May 14 2013 1:43 PM
# 3185 Critique Analogy