Which organelle is specifically involved in detoxifying harmful substances within a cell?

The smooth endoplasmic reticulum (SER) plays a crucial role in detoxifying harmful substances within a cell. Unlike the rough endoplasmic reticulum, which is studded with ribosomes for protein synthesis, the smooth endoplasmic reticulum does not have ribosomes on its surface. Instead, its functions include the synthesis of lipids, metabolism of carbohydrates, and especially the detoxification of drugs and poisons.

Cells that are active in detoxification, such as liver cells, have an extensive network of smooth endoplasmic reticulum. This organelle contains enzymes that modify toxic substances to make them less harmful or easier for the cell to eliminate. Thus, the smooth endoplasmic reticulum contributes significantly to maintaining cellular health by neutralizing potential damage from toxins.