Which of the Following Is True Regarding Basic Principles of Drug

Which of the following is true regarding basic principles of drug distribution in the bloodstream?

A) All drugs in the blood are either bound to plasma proteins or free.
B) Only the drug that is bound to plasma proteins can exert the pharmacologic effect.
C) Only the drug that is bound to plasma proteins can pass across cell membranes.
D) The free drug is a reservoir for the drug.

Correct Answer:

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