The Protist Kingdom consists of mostly unicellular organisms that can have characteristics similar to plants, animals or fungi. Characteristics of Protists: mostly unicellular, few multicellular, eukaryotic, can be heterotrophic or autotrophic.Ex: algae, Paramecium, kelp (multicellular). î î î.he Protist Kingdom consists of mostly unicellular organisms that can have characteristics similar to plants, animals or fungi. Characteristics of Protists: mostly unicellular, few multicellular, eukaryotic, can be heterotrophic or autotrophic. Ex: algae, Paramecium, kelp (multicellular). î î î.
The active metabolites of codeine, notably morphine, exert their effects by binding to and activating the Î¼-opioid receptor. This occurs because opioids structurally mimic endogenous endorphins which are naturally found within the body and also work upon the Î¼-opioid receptor set.
Most of the caffeine you ingest is metabolized by a CYP450 liver enzyme called âCYP1A2.â This means that the body uses CYP1A2 to âdemethylateâ caffeine molecules, transforming them into other substances, chiefly paraxanthine, which are ultimately excreted in the urine.hen caffeine and another drug are each metabolized by CYP1A2, they compete for the enzyme. As a result, each is said to partially block the âenzymatic metabolismâ of the other, and the speed with which they are excreted from the body decreases.