The concentration of the primary messenger (ligand) in the bloodstream changes from <10?9 M when the signal is not being secreted to 10?7 M when it is being secreted
Which of the following Kds for binding that ligand would be optimal for a receptor involved in a responsive signaling system?
A) 10?10
B) 10?9
C) 10?8
D) 10?7
E) 10?6
Answer: C
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