Bioactivity with the Emphasis on Toxic Actions

The results of exposing biological objects to pharmaca can include  

A) Quick passage of the compound through the biological object without affecting its function. 

C) Induction in the biological object of reversible and therefore temporary effects, which disappear with the elimination of the compound. Most therapeutic effects of drugs and many of their side-effects belong in this category. 

D) Induction of irreversible changes in the biological object by a reversible interaction with the pharmacon, such that the effect continues even after the drug is totally eliminated. An example is abnormal embryonic development due to early intrauterine exposure to hormones. 

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