Which statement correctly pairs a substance with its attribute?

• A. Acetaminophen (Tylenol) is metabolized and removed by the liver
• B. DDT is metabolized to calcium
• C. Ethylene glycol bioaccumulates in the body
• D. Formaldehyde is metabolized to caffeine

Answer: (A)

Drugs are typically processed by the liver before being eliminated from the body, so a statement that a substance is metabolized and removed by the liver is accurate. Acetaminophen is indeed handled this way: after absorption, the liver metabolizes it and helps clear it from the body, usually via conjugation to water-soluble forms that are then excreted in urine. The other options misstate how those substances are processed: DDT is not turned into calcium; it’s a persistent pollutant that can accumulate in tissues and move through the food chain, not convert to a mineral. Ethylene glycol is not known for lasting bioaccumulation in the body; it is rapidly metabolized to acids that cause toxicity and is excreted. Formaldehyde is not metabolized to caffeine; caffeine comes from entirely different metabolic pathways and sources.