Metabolism is defined as?

Metabolism is defined as?

• A. Biotransformation—chemical reactions that inactivate a drug by converting it into a water-soluble compound
• B. The passage of a drug into the bloodstream
• C. The transportation to tissues
• D. The body's way of removing waste products

Answer: (A)

Metabolism is the body's chemical alteration of drugs, primarily through biotransformation in the liver. Enzymes change the drug into more water-soluble forms, enabling them to be eliminated from the body. This transformation is what makes the drug easier to excrete and is the defining step that distinguishes metabolism from the other processes involved in pharmacokinetics. Absorption describes how a drug enters the bloodstream, distribution covers how it is carried to tissues, and excretion refers to the removal of waste from the body.

Metabolism is the body's chemical alteration of drugs, primarily through biotransformation in the liver. Enzymes change the drug into more water-soluble forms, enabling them to be eliminated from the body. This transformation is what makes the drug easier to excrete and is the defining step that distinguishes metabolism from the other processes involved in pharmacokinetics. Absorption describes how a drug enters the bloodstream, distribution covers how it is carried to tissues, and excretion refers to the removal of waste from the body.