試題詳解

2.Which of the following statements about protein-ligand binding is correct?
(A) The larger the K_a (association constant), the lower the affinity.
(B) The larger the K_a, the faster is the binding.
(C) The K_a is equal to the concentration of ligand when half of the binding sites are occupied.
(D) The K_a is independent of conditions such as salt concentration and pH.
(E) The larger the K_a, the smaller the Kd(dissociation constant).