Two receptors, A and B, can bind the same chemical signaling molecules but the concentration of those molecules required to reach 50% saturation is twice as great for receptor B. Therefore, the receptors have the same ________, but different ________

A. specificity, affinity
B. specificity, saturation
C. affinity, specificity
D. affinity, competition
E. competition, affinity


A

Anatomy & Physiology

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